service manual - diagramasde.com nd20.pdfservice manual a cd stereo system nsx-d20 nsx-r20 s/m code...

SERVICE MANUAL

DATA

CD STEREO SYSTEM

NSX-D20NSX-R20

S/M Code No. 09-024-454-0R1REVISION

U(S)

LH(S)

BASIC CD MECHANISM : BZG-2 ZD9GNC1BASIC TAPE MECHANISM : CMAT6Z2(1+1)ALPS

• This Service Manual is the "Revision Publishing" and replaces "Simple Manual"(S/M Code No. 09-01C-454-0T1).

• If requiring information about the CD mechanism, see Service Manual of BZG-2, (S/M Code No. 09-023-353-2N8).

NSX–D20

SPEAKERSYSTEMCD

CASSEIVER

SX–ND20CX–ND20

REMOTECONTROLLER

RC–CAS03(VS)

NSX–R20 SX–NR20CX–NR20

– 2 –

SPECIFICATIONS ..............................................................................................................................................................3

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ......................................................................4

NOTE ON BEFORE STARTING REPAIR ................................................................................................................... 5, 6

ELECTRICAL PARTS LIST (CX – ND20 / NR20) ..................................................................................................7 ~ 20CHIP RESISTOR PART CODE......................................................................................................................................21

TRANSISTOR ILLUSTRATION........................................................................................................................................21

WIRING – 1 (MAIN / HP) ................................................................................................................................................22

SCHEMATIC DIAGRAM – 1 (MAIN 1 / 2) ......................................................................................................................23

SCHEMATIC DIAGRAM – 2 (MAIN 2 / 2) ......................................................................................................................24

SCHEMATIC DIAGRAM – 3 (U : HP) ..............................................................................................................................25SCHEMATIC DIAGRAM – 4 (LH : HP) ............................................................................................................................26

WIRING – 2 (FRONT) ......................................................................................................................................................27

SCHEMATIC DIAGRAM –5 (FRONT / DECK) ..............................................................................................................28

WIRING – 3 (U : PT).........................................................................................................................................................29

SCHEMATIC DIAGRAM – 6 (U : PT) ..............................................................................................................................30

WIRING – 4 (LH : PT) .......................................................................................................................................................31SCHEMATIC DIAGRAM – 7 (LH : PT) ............................................................................................................................32

WIRING – 5 (DECK) .........................................................................................................................................................33

IC BLOCK DIAGRAM ......................................................................................................................................................34

FL (HUA – 13SS09T) GRID ASSIGNMENT / PIN CONNECTION / ANODE CONNECTION...................................35

IC DESCRIPTION ...................................................................................................................................................... 36, 37

ADJUSTMENT (TUNER / DECK / FRONT) .........................................................................................................38 ~ 44CD TEST MODE .............................................................................................................................................................45

MECHANICAL EXPLODED VIEW ................................................................................................................................. 46

MECHANICAL PARTS LIST ..................................................................................................................................... 47, 48

COLOR NAME TABLE ....................................................................................................................................................49

TAPE MECHANISM EXPLODED VIEW ....................................................................................................................... 50TAPE MECHANISM PARTS LIST ..................................................................................................................................51

GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) ...........................................................52

SPEAKER PARTS LIST (SX – NR20 / ND20) ..............................................................................................................53

ACCESSORIES / PARTS LIST ......................................................................................................................................54

OTHER PARTS LIST (CX – ND20 / NR20) ..................................................................................................................55

TABLE OF CONTENTS

– 3 –

SPECIFICATIONS

• Design and specifications are subject to change without notice.

MAIN UNIT CX-ND20 / NR20TUNERFM tuning range 87.5 MHz to 108 MHzFM usable sensitivity (IHF) 13.2 dBfFM antenna terminals 75 ohms (unbalanced)AM tuning range 531 kHz to 1602 kHz (9 kHz step)

530 kHz to 1710 kHz (10 kHz step)AM usable sensitivity 350 µV/mAM antenna Loop antenna

AMPLIFIERPower output 32 W + 32 W (40 Hz - 20 kHz, T.H.D.

less than 1 %, 6 ohms)40 W + 40 W (1 kHz, T.H.D. less than10 %, 6 ohms)

Power output <LH> Rated: 40 W + 40 W (6 ohms, T.H.D.1 %, 1 kHz)Reference: 50 W + 50 W (6 ohms,T.H.D. 10 %, 1 kHz)

Total harmonic distortion 0.08 % (20 W, 1 kHz, 6 ohm, DINAUDIO)

Total harmonic distortion<LH> 0.08 % (25 W, 1 kHz, 6 ohm, DINAUDIO)

Input VIDEO / AUX: 500mVInput <LH> VIDEO / AUX: 500mV

MIC: 1.0 mV (10 kohms)Outputs SPEAKERS: 6 ohms or more

PHONES: 32 ohms or more

CASSETTE DECKTrack format 4 tracks, 2 channels stereoFrequency response 50 Hz - 15 kHzRecording system AC biasHeads DECK 1: playback x 1

DECK 2: recording / playback x 1,erase x 1

CD PLAYERLaser Semiconductor laser (l = 780 nm)D/A converter 1 bit dualSignal - to - noise ratio 85 dB (1 kHz, 0 dB)Harmonic distortion 0.05 % (1 kHz, 0 dB)

GENERALPower requirements 120 V AC, 60 HzPower requirements <LH> 120 V / 220 - 230 V / 240 V AC

(Switchable), 50 Hz / 60 HzPower consumption 61 WPower consumption <LH> 71 WPower consumption With ECO mode on: 0.6 W in standby mode With ECO mode off: 20 WDimensions (W x H x D) 260 x 324 x 315 mm

(101/4 x 127/8 x 121/2 in.)Weight 5.8 kg (12 lbs 13 oz)Weight <LH> 6.0 kg

FRONT SPEKERS SX – ND20 / NR20Speaker system 3 way, bass reflex (magnetic shielded)Speakers units Woofer: 120 mm (43/4 in.) cone

Tweeter: 60 mm (23/8 in.) cone

Super tweeter: 20 mm (13/16 in.)

ceramicImpedance 6 ohmsDimensions (W x H x D) 210 x 324 x 215 mm

(83/8 x 127/8 x 81/2 in.)Weight 3.0 kg (6 lbs 10 oz)

– 4 –

This set employs laser. Therefore, be sure to follow carefully the

instructions below when servicing.

WARNING!!WHEN SERVICING, DO NOT APPROACH THE LASEREXIT WITH THE EYE TOO CLOSELY. IN CASE IT ISNECESSARY TO CONFIRM LASER BEAM EMISSION.BE SURE TO OBSERVE FROM A DISTANCE OF MORETHAN 30cm FROM THE SURFACE OF THE OBJECTIVELENS ON THE OPTICAL PICK-UP BLOCK.

Caution: Invisible laser radiation whenopen and interlocks defeated avoidexposure to beam.Advarsel: Usynlig laserståling ved åbning,når sikkerhedsafbrydere er ude af funktion.Undgå udsættelse for stråling.

VAROITUS!Laiteen Käyttäminen muulla kuin tässä käyttöohjeessamainitulla tavalla saataa altistaa käyt-täjänturvall isuusluokan 1 ylittävälle näkymättömällelasersäteilylle.

VARNING!Om apparaten används på annat sätt än vad somspecificeras i denna bruksanvising, kan användarenutsättas för osynling laserstrålning, som överskridergränsen för laserklass 1.

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

CAUTIONUse of controls or adjustments or performance of proce-dures other than those specified herin may result inhazardous radiation exposure.

ATTENTIONL’utillisation de commandes, réglages ou procéduresautres que ceux spécifiés peut entraîner une dangereuseexposition aux radiations.

ADVARSELUsynlig laserståling ved åbning, når sikkerhedsafbrydereerude af funktion. Undgå udsættelse for stråling.

This Compact Disc player is classified as a CLASS 1LASER product.The CLASS 1 LASER PRODUCT label is located on therear exterior.

CLASS 1 LASER PRODUCTKLASSE 1 LASER PRODUKTLUOKAN 1 LASER LAITEKLASS 1 LASER APPARAT

Precaution to replace Optical block (BZG-6 YANC)

(PXR-104X-BP-0101)

Body or clothes electrostatic potential could

ruin laser diode in the optical block. Be sure

ground body and workbench, and use care the

clothes do not touch the diode.

1) After the connection, remove solder shown inright figure.

CD PICK-UP Assy PWB

Solder

– 5 –

NOTE ON BEFORE STARTING REPAIR

Charging voltage (V) Discharging Rated power (W) Parts number

(C101, 102) resistor (Ω)

25-48 100 3 87-A00-247-090

49-140 220 5 87-A00-232-090

Note: The reference numbers (C101, C102) of the electrolytic capacitors can change depending on the models. Be sure to check thereference numbers of the charging capacitors on schematic diagram before starting the discharging work.

2. Check items before exchanging the MICROCOMPUTER

Be sure to check the following items before exchanging the MICROCOMPUTER. Exchange the MICROCOMPUTER after confirmingthat the MICROCOMPUTER is surely defective.

2-1. Regarding the HOLD terminal of the MICROCOMPUTER

When the HOLD terminal (INPUT) of the MICROCOMPUTER is “H”, the MICROCOMPUTER is judged to be operating correctly.When this terminal is “L”, the main power cannot be turned on. Therefore, be sure to check the terminal voltage of the HOLDterminal before exchange.When the MICROCOMPUTER is not defective, the HOLD terminal can also go “L” when the POWER AMPLIFIER has anyabnormalities that triggers the abnormality detection circuit on the MAIN C. B. that sets the HOLD terminal to “L”.

• Good or no good judgement of the MICROCOMPUTER

11111 Turn on the AC main power.22222 Confirm that the main power is turned on and the HOLD terminal of the MICROCOMPUTER keeps the “H” level or not.33333 When the HOLD terminal is “L” level, the abnormality detection circuit is judged to be working correctly and the

MICROCOMPUTER is judged to be good.

1. Forced discharge of electrolytic capacitor of power supply block

When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged acrossthe electrolytic capacitors (C101, 102) even though AC power cord is removed. If repair is attempted in this condition, secondary defectcan occur.In order to prevent the secondary trouble, perform the following measures before starting repair work.

Discharge procedure

11111 Remove the AC power cord.22222 Connect a discharging resistor at an end of lead wire that

has clips at both ends. Connect the other end of the leadwire to metal chassis.

33333 Contact the other end of the discharging resistor to thepositive (+) side (+VH) of C101. (For two seconds)

44444 Contact the same end of the discharging resistor as step33333 to the negative (-) side (-VH) of C102 in the same way.(For two seconds)

55555 Check that voltage across C101 and C102 has decreasedto 1 V or less using a multimeter or an oscilloscope.

Select a discharging resistor referring to the following table. Fig-1

MAIN C.B

D101

C101 C102

2 2

3 4

– 6 –

In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not.

2-2. Regarding resetThere are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC powercord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed.When the above described phenomenon occurs, it can lead to wrong judgement as if the MICROCOMPUTER is defective and toexchange the MICROCOMPUTER. In such a case, perform the forced-reset by the following procedure and check good or nogood of the MICROCOMPUTER.11111 Remove the AC power cord.

22222 Short both ends of the electrolytic capacitor C113 that is connected to VDD of the MICROCOMPUTER with tweezers.33333 Connect the AC power cord again. If the MICROCOMPUTER returns to the normal operation, the MICROCOMPUTER is

good.

Note: The reference number or MICROCOMPUTER pin number of transistor (Q110) and electrolytic capacitor (C113) can change dependingon the models. Be sure to check the reference numbers on schematic diagram before starting the discharging work.

2-3. Confirmation of soldering state of MICROCOMPUTER

Check the soldering state of the MICROCOMPUTER in addition to the above described procedures. Be sure to exchange theMICROCOMPUTER after surely confirming that the trouble is not caused by poor soldering but the MICROCOMPUTER itself.

Fig-2-2

MICRO-COMPUTER

MIC

ROCOMPUTER

FRONT C.B

FRONT C.B

VSS

VDDC113

*

%

C113

1815

Short with tweezers.

– 7 –

! = ! SAFTY PARTSC = Components marked

All components used on this model at the production line are shown in this service manual.However, please note that not all components will be available as spare parts for after-sales service.Components marked S and O are designated as spare parts for service and will be stocked at the spare parts centers.Components marked X and R are not designated as spare parts for after sales service, and will not be stocked at the spare parts centers.

UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL

ELECTRICAL PARTS LIST (CX – ND20 / NR20)

! " " " "! " "! !

"! " " " #!$ " " ! " " " " #$ #! "! "

# !% $ ! " " #$! " "# " "#%

$##$##$##$# #$##$#!#$##$##$

###$##$# ##%## " ##%#!#%##%##!## !%

# ##$#!!$# !!$#!!$##$##$## !$# #$

#!# " "#!!$ #!#%##& !!## '()###!& !! !*" !*" %""%$! !*"

! !#*"! !*"# !*"# !*" "* # "## "# #! #*##!*!*#!*

– 8 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL $ ! $! +,+& #!* #%() ' " ! " """-!- - # #-!-!- !-

- !- - "- !!-! ##'-! ##'-!-!--!

- !-!-# # ",!+$",!+$",!+$ ",!+$ ",!+$$"! ",!+$

*$+# *$+#",+$ ",+$",!+$!",!+$!$"!$"!$"! $"

!$"!!$"",+$ ",!+$ " ,!+$",!+$ ",!+$! " ,!+$",!+$",!+$

",!+$ ",!+$",!+$!",+$",!+$",+$#",!+$",!+$ " ,+$!"!,!+$

",!+$ ",!+$",!+$ ",!+$ ",!+$ ",!+$ ",!+$ ",!+$ !",!+$ ",!+$

",!+$!",!+$!",!+$!",!+$! ",!+$",!+$",!+$",!+$ ",!+$ " ,!+$

– 9 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL ",!+$ ",+$ ",!+$ ",!+$ ! ",!+$ ",!+$ !"!,!+$ #",!+$ ",!+$ !"!,!+$

",!+$ ",!+$ ",!+$ $" ! ",!+$ ",!+$ ",!+$!",!+$!",!+$!",!+$

! ",!+$!",!+$!!",!+$!$"! " ,!+$! " ,!+$! " ,!+$! " ,!+$! " ,!+$! " ,!+$

! " ,!+$ ",!+$",!+$!",!+$",!+$",+$#",!+$",+$",!+$",!+$

#",!+$",!+$",!+$",!+$",!+$",!+$ ",!+$",!+$ ",!+$ ",!+$

",!+$ " ,!+$ ",!+$ ",!+$ # " ,!+$",!+$ ",!+$",!+$!!"!,!+$$"

",+$#",!+$",!+$ ",!+$ ",!+$",!+$! ",!+$ ",!+$#",!+$",!+$

",!+$ ",!+$ *$+# *$+# *$+#!$" " ,!+$# ",!+$# ",!+$# ",!+$

– 10 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL # ",!+$# ",!+$#! ",!+$# ",!+$# ",!+$## ",!+$# ",!+$# ",!+$# ",!+$# ",!+$

# ",!+$# ",!+$#! ",!+$# ",!+$# ",!+$## ",!+$# ",!+$# ",!+$# ",!+$# ",!+$

# ",!+$# ",!+$#! ",!+$# ",!+$# ",!+$## ",!+$# ",!+$# ",!+$# ",!+$# ",+$

# !"!,!+$#!"!,!+$#! ",!+$# " ,+$# " ,!+$## " ,!+$# ",!+$# ",!+$# ",!+$# " ,+$

# !$"# ",!+$# ",+$#",!+$# ",!+$#! ",!+$# ",!+$#",!+$##",!+$#!",+$

#!!"!,!+$#!#",!+$#",!+$#",!+$#",!+$# ",!+$#",+$#!",+$#",!+$#",!+$

##",!+$#! +-()#! +-()#! +-() #! +-()#! +-()!#! +-()#! +-()#! +-()##! +-()

#! +-()#! +-()#! +-()#! +-() #! +-()#! +-() #! +-() #! +-() #! +-() #! +-()

– 11 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL #! +-() !#! +-() #! +-() #! +-()!#+'"&#+'"&& !!&'&&& ! ***$! $()$! $()

#",+$ #",+$ #",+$ #",+$ ",+$",+$ #",+$ #",+$ #",+$ ! #",+$

!",+$!!",+$+# # +*"+# # +*"*!%* !%*!%*!!%*##%*#%

*#%*#%* * !" "*!" "*!!*# "*& " * "*& " *" *& " *" *& "

*#"*!#""*#""*#""* ""*!" "* !" "* " "*!!" "*! " "

*!!" "*" "*##%*#*#* !" "* !" "* " "* " "* " "

* " "*#$*#!$* #$* #!$*!%*!%*#!*!* " "

* " "*$ * $ *#$*#!$*!#$*!#!$* * * # $

– 12 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL * !# $*!#%*#"!&*#"!&*# $*#$*!!*!%*!!%*!%

*!%* #%**** *# $* *!#%* #%

* !" "* #* #* #* !!* !!$* * #!* !!%* !#$

* !#$* !#%* ! *! $*! $*!!" "*! !" "*!!!$*!!!!$*!# $

*!# $*!# " "*! " "*! !$*! !$*!*! *! " "*!! " "*! " "

*! " "*!#$*!!#$*! !*! !*!#!*!!*!*!*! " "

*! " "*! " "*!!" "*! " "*!! *!!#%*!! #%*!! !*!!! !*!!

*!" "*!*$"*!*!* !*!*!!*!*#!$

– 13 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *#!$*##%*#!*# " "*#!*#!!*# " "*#!*##!"! "*# !%

* " "*# !%** !" "* " "* " "*# " "*#%* !* " "

*! " "* " "*$"*$ * " "*#! !* !* $"* !* $"

* !$"* $"* $"* #$"*!" "*!*!*!*!!*#!#

*#!$"*###$*#!*##$*# !*#!*#! *#$*#!#$*# $

*## $*# !*#!#$*##*# $"*###%*#!#%*#!!#*#! " "*#!#

*#"!"*# " "*#!*# !*###$*#!" "*##%*#!*# !*#!

*#!*##!$*##!$*## *## *###%*##!" "*###!%*! "*! "

– 14 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL * ! **** ! ****!!&$*!!&$*!### '()*!### !& !!*!'#*( )*#!'*#!!'* ##*" +()

* ##*" +()* ##*" +()* ##*" +()* ##*" +()*! ##*" +()* ##*" +()* ##*" +()* *"* %""%$* *" "

*! *" "* *" "* *" "*# !%""%$* !*"* !*"* *"* !#*"!*! !*"*! *"

*! !#*"!*! !#*"!* *"* !#*"!* !*"* !*"* !#*"!*! !#*"!* *"* *"

*# *" * *" * *"*! *"* ##*" +()*! ##*" +()* %""%$!*#%""%$!*# *"*# !#*"!

*# %""%$*# !*"*# !*"* !#*"!* *"* !#*"!*!! %""%$ *!! %""%$ * *$+#* !*"

*# #! &*&*# #! &*&*# *$+#*# ## &*&!*## #%""%! *## !*"*!$"*!$"*! *$+#*!#! "!

*!#! "!**! *$!()**!! *&**!#* **###* *$#"* ' *$!"* ()*$!!$* &*$!"* &*$$"

– 15 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *$!"!,!+$* !* ()* !* ()* * %** !* "()* # $% ()* * "* * "* #* "* #!%! *

* # !%!* ,* #! * "* #!%!* * #%! * *!(* )* #* +()* #* +()*- # #*- # #*-!*-!!

*-# # #*-!*-! *-! *-*-!!*-!*-!!*-!*-! !

*-!"*-!"*-*-!!# *- *- !!# *-*-!!# *-!*-!!!#

*-!*-!*-#!*-!*-!*-!*-!*- !*-! *-!!

*-!!*-!!*-!!*-!!*-#!#*-##! *-!#*-#! *-!!# *- !!#

*-!!!# *-!*-!*-! *-!"*- !"*-!*-!*-*-

*- *-!!# *-#"$ !*-#"$ !*-#" *- #" *-#"$ !*-!#"$ !*-#" *-#"

– 16 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *-##" *- ! *- !*- #(,)*- #(,)*-! *-!"*-!"*-!!*- ,()

*-!! *-##!"!"*-#!! !*-# !! !*-# # #*-#!*-#!* *$+#* *$+#*#",!+$

*",!+$* " ,+$* " ,+$* " ,+$* ",+$* ",+$*! ",!+$* ",!+$* ",!+$*# ",!+$

*#",+$*#",+$*",!+$*",+$* ",+$*! " ,!+$*$"*",!+$*#",!+$* ",+$

* " ,!+$*",+$*",+$*",+$* ",+$* ",+$* ",+$* ",+$* ! " ,+$*",!+$

*",!+$*",!+$*#"#,+$* !"!,+$* !"!,+$*",+$*!!"!,+$* " ,!+$*",!+$*#",!+$

*! " ,!+$*!",!+$*!",!+$*!",!+$*! ",!+$*! ",!+$*!",!+$*!! ",!+$*!",!+$*!",+$

*!",!+$*#"#,!+$*#",!+$*",!+$*",!+$*#!"!,!+$*#",!+$*# #"#,!+$*#",!+$*#!!"!,!+$

– 17 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *#!",!+$*#"#,!+$* #"#,!+$*",!+$*!",!+$*",!+$*",!+$*",+$*",+$*",+$

*",+$*",+$* ",+$*",+$*!",+$*",!+$*",!+$*#",+$*",+$*",+$

*",+$*",+$* ",+$*",+$*!",+$*#"#,+$*#"#,+$*#",+$*#",+$*",+$

*",+$*",+$*",+$*",+$*",+$*",!+$*",!+$* ",!+$* ",!+$*",!+$

*!",!+$*",!+$*",!+$* ",+$* ",+$* #"#,!+$* ",+$* !",+$* ##"#,!+$* " ,!+$

* " ,!+$*",+$*!"!,!+$*!!"!,!+$* " ,!+$* " ,!+$*#",!+$*!",+$*! " ,!+$*! " ,!+$

*! " ,!+$*! " ,!+$*!",+$*!!",+$*!",!+$*! " ,+$*",+$*",+$*",+$* ",+$

*",+$*!",+$*",+$*",+$*#",!+$*",!+$*",!+$*",!+$* ",+$*",!+$

– 18 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *",!+$*!",+$*!"!,+$*",+$*",+$*",+$*#",+$*#",+$*#",+$*#",!+$

*# ",!+$*# " ,!+$*#! " ,!+$*# " ,!+$*# " ,!+$*##",!+$*!"!,!+$*",!+$*#$"* ", +$

* ", +$* #",+$*",+$* " ,+$*",+$*",+$* ",+$* ",+$*",+$*",+$

*! " ,+$* " ,+$*#"#,!+$*#"#,!+$*",!+$* ",!+$* ",!+$* ",!+$* " ,!+$* #",+$

* ",!+$* !",!+$* ",!+$* !"!,!+$* # " ,!+$* !#",!+$*!!"!,!+$*!!"!,!+$*!# "#,!+$*! # "#,!+$

*!",!+$*!!",!+$*!",!+$*!",!+$*!# " ,!+$*! " ,!+$*!",!+$*!",!+$*!",!+$*! ",!+$

*!",!+$*!!",!+$*!",!+$*!#",!+$*!",!+$*!",!+$*!",!+$*! ",!+$*!!"!,!+$*!!!"!,!+$

*!",!+$*!",!+$*!#",!+$*!",!+$*!",!+$*!",!+$*!",!+$*! ",!+$*!",!+$*!!",!+$

– 19 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *!",!+$*!",!+$*!#",!+$*! ",!+$*! ",+$*! ",!+$*! ",!+$*! ",!+$*! #",!+$*!",!+$

*!",!+$*!",!+$*!!# "#,+$*! ",!+$*! ",!+$*!## "#,!+$*!! ",!+$*!!#"#,!+$*!!#"#,!+$*!!#",!+$

*!",!+$*!",!+$*!#"#,!+$*! ",!+$*!!!"!,!+$*!",!+$*!",!+$*#",!+$*#!*#",!+$

*#$"*#$"*",!+$*",!+$*",+$* $"*",!+$*!!"!,!+$*#",!+$*",!+$

*$"*$"* ",!+$* ",!+$*!"!,+$*",!+$*$"*",!+$*!",!+$*#"#,!+$

* ",!+$*",!+$*$"*",!+$*",!+$* ",!+$*",!+$*!",!+$*",!+$*",!+$

*!",!+$*#",!+$*# " ,!+$*#",!+$*#!! "!,!+$*#$"*#",!+$*# " ,!+$*# " ,!+$*# " ,!+$

*#$"*# ",!+$*#!",+$*#!",!+$*#!",!+$*#!"!,!+$*#!",!+$*#",!+$*#!"!,!+$*##",!+$

– 20 –



UNIT-NAME ! C REF-NO PARTS-NO PARTS-NAME SUFFIX&MODEL *#! "!,!+$*# " ,+$*#!"!,!+$*##"#,!+$*# !"!,!+$*# " ,+$*#!",+$*# " ,+$*#",!+$*##",+$

*##!"!,!+$*###$*##",!+$*###$*## ",!+$*###$*##!",!+$*## ",!+$*##",!+$*###",!+$

* !* !*#%!# "%"%*# *# *+###!# "# *+! "*+# +*"#*+# # +*"*##!&* %#

!#&*# !#*"!# !*"# *"# !*"# !*"# !*" *$+#.#!#.#!#

.!!(&).!!(&)#",+$/.'# " '&.'##" '&.#!+ +.!"* .!"* .!"* .!"*

+# +*"#

– 21 –

TRANSISTOR ILLUSTRATION

E C B

2SA1980G2SA1981Y

2SC3331(T/U)

B C E

2SB15482SB16772SB16862SD26192SD2642

2SA1585SR

E C B E C B

2SC5343GL

E C B

2N5551C

G D S

2SK3053

S D G

2SJ460 2SK2541

EB

C

S

2SK360E

GD

2SA1235F2SC2620B2SC3052F2SC5345SF/S(O)2SD1306E

SBT5401SBT5551SRA2202SSRA2207S

8 8

A

Resistor Code

Chip Resistor Part Coding

Figure

Value of resistor

Chip resistor

Wattage Type Tolerance

1/16W

1/10W

1/8W

1608

2125

3216

5%

5%

5%

CJ

CJ

CJ

Form L W t

1.6 0.8 0.45

2 1.25 0.45

3.2 1.6

108

118

128

: A : A

CHIP RESISTOR PART CODE

0.55

Resistor CodeDimensions (mm)

Symbol

1/16W 1005 5% CJ 1.0 0.5 0.35 104L

t

W

D

2SK2158

SG

– 22 –

WIRING – 1 (MAIN / HP)32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

– 23 –

SCHEMATIC DIAGRAM – 1 (MAIN : 1 / 2)

– 24 –

SCHEMATIC DIAGRAM – 2 (MAIN : 2 / 2)

– 25 –

SCHEMATIC DIAGRAM – 3 (U : HP)

– 26 –

SCHEMATIC DIAGRAM – 4 (LH : HP)

– 27 –

WIRING – 2 (FRONT)32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

– 28 –

SCHEMATIC DIAGRAM – 5 (FRONT / DECK)

– 29 –

WIRING – 3 (U : PT)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

– 30 –

SCHEMATIC DIAGRAM – 6 (U : PT)

– 31 –

WIRING – 4 (LH : PT)15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

– 32 –

SCHEMATIC DIAGRAM – 7 (LH : PT)

– 33 –

WIRING – 5 (DECK)32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

R1

R2 C1 SW1SW2

VR

SW3SW4SW5

J1

J2

CNA302

BLK

GR

Y

BR

N

GR

Y

WH

T

BLK

GR

N

YE

L

RE

D

WH

T

BLK

BLK

WH

T

GR

N

YE

L

RE

D

WH

T

7 8654321

E+

E

R

R+

LL L+

L+

E / RP HEADDECK 2

P HEADDECK 1

GR

Y

WH

T

BLK

RE

D

WH

T

BLK

RE

D

TO MAIN C.BCN302

CNA301

321

TO MAIN C.BCN301

R R+

– 34 –

IC BLOCK DIAGRAM

– 35 –

FL (HUA – 13SS09T) GRID ASSIGNMENT / PIN CONNECTION / ANODE CONNECTIONGRID ASSIGNMENT ANODE CONNECTION

PIN CONNECTION

– 36 –

IC DESCRIPTIONIC, µPD780226GF-033-3BA

Pin Name I/O DescriptionPin No.

1 O-MOTOR O DECK motor output.

2 O-SOL1 O DECK1 solenoid output.

3 O-SOL2 O DECK2 solenoid output.

4 O-STBY LED O Standby LED output.

5 O-MUTE O System mute ON/OFF output.

6 O-KSCAN O Key scan timing output.

7 O-PLL_CE O PLL chip enable output for LC72131D-N.

8 I-TM_BASE I Time-base signal input.

9 O-TU-ON O Tuner ON/OFF output.

10 O-PB2 O DECK2 play back ON/OFF output.

11 O-VF – Not used.

12 I-AUTO1 I DECK1 detecting reel rotation switch input.

13 I-REA I DECK2 prevention for mistaken recording switch input.

14 I-CST1 I DECK1 cassette detect switch input.

15 I-CST2 I DECK2 cassette detect switch input.

16 I-AUTO2 I DECK2 detecting reel rotation switch input.

17 IC – GND.

18 VSS0 – GND.

19 VDD0 – Power supply input.

20 O-POWER O System power supply ON/OFF output.

21 I-JOG_A I JOG rotary encoder signal input (A/D).

22 I-JOG_B I JOG rotary encoder signal input (A/D).

23 I-VOL_A I VOL rotary encoder signal input (A/D).

24 I-VOL_B I VOL rotary encoder signal input (A/D).

25 I-SUBQ I CD SUBQ serial input.

26 I-WRQ I CD IC control input.

27 I-DRF I CD IC control input.

28 I-RDS_CLK I Tuner RDS clock output for BU1920FS. (Connected to GND through a resistor)

29 I-RDS_DATA I Tuner RDS data output for BU1920FS. (Connected to GND through a resistor)

30 RESET I Reset input.

31 O-DSC/O-DATA O Serial data latch output for BD3881FV / PLL data output for LC72131D-N.

32 O-CLK_SFT O MICON clock shift output.

33 I-IFC I Tune IF count serial data input.

34 I-RMC I System remote control signal input.

35 I-DISH I CD turntable photo sensor signal input.

36 I-STEREO I Tuner stereo detected input.


38 X2 – 4.19MHz oscillator circuit.

39 X1 – 4.19MHz oscillator circuit.

40 VSS – GND.

41 AVDD – Power supply input.

42 I-HOLD I Power failure detected input "L" to stop clock and hold memory.

43 I-CDSW I CD mechanical switch A/D converter input.

– 37 –

Pin Name I/O DescriptionPin No.

44 I-SPEANA_1 I A/D input for spectrum analyser level display.



47 I-KEY 1 I Key A/D input 1.

48 I-KEY 2 I Key A/D input 2.

49 I-TU_SIG I Tuner RDS signal input. (Connected to GND through a resistor)

50 AVSS – GND.

51 O-BIAS O Bias output.

52 O-CD_CE O CD chip enable output.

53 O-CD_CLK O CD serial clock output.

54 O-CD_DATA O CD serial data output.

55 O-CLK O PLL clock output for LC72131D-N.

56 ~ 59 NC – Not connected.

60 I-CAM2 I DECK2 cam switch input.

61 I-CAM1 I DECK1 cam switch input.

62 ~ 70 P24 ~ P16 O FL segment P24 ~ P16 output.

71 P15/AM 10K O/I FL segment P15 output / AM 10K data input to diode.

72 P14/KARAOKE O/I FL segment P14 output / KARAOKE data input to diode (LH only).

73 P13/LW O/I FL segment P13 output / LW data input to diode (not used).

74 P12/SW O/I FL segment P12 output / SW data input to diode (not used).

75 P11/OIRT O/I FL segment P11 output / OIRT data input to diode (not used).

76 P10/FM WIDE O/I FL segment P10 output / FM WIDE data input to diode (not used).

77 P9/R+1 O/I FL segment P9 output / R+1 data input to diode (not used).

78 P8/DEMO O/I FL segment P8 output / DEMO data input to diode (not used).


80 VLOAD _ Power supply for FL display.

81 P7/ECO-OFF O/I FL segment P7 output / ECO-OFF data input to diode (not used).

82 ~ 87 P6 ~ P1 O FL segment P6 ~ P1 output.

88 ~ 100 G1 ~ G13 O FL grid G1 ~ G13 output.

MOTOR

SFR10

MAIN C.B

SFR451

SFR452

16

PARTS SIDE4

5

7

J20

3

4

5

7

8

L802

L952

L904

RL

G13

TP8

TP914

15

16

17

IC80124

1

2

3

VT

GND

2

L907

L953

DECK C.B

PH

13

MAIN C.B PATTERN SIDE

RPH

13

– 38 –

ADJUSTMENT (TUNER / DECK / FRONT)

– 39 –

<TUNER Adjustment>

1. VT Check (AM)

Requirements

• Measuring instrument: Digital multimeter

Test points: VT, GND

1) Connect the digital multimeter between VT and GND.

2) Set the function to AM, and tune the receiving frequency of the unit at 1710kHz.

3) Check that the digital multimeter ranges under 9V.

4) Tune the receiving frequency of the unit at 530kHz.

5) Check that the digital multimeter ranges above 0.5V.

2. VT Adjustment and Check (FM)

Requirements: Same as the above.

• Adjustment point: L907

1) Connect the digital multimeter between VT and GND.

2) Set the function to FM, and tune the receiving frequency of the unit at 108.0MHz.

3) Adjust L907 so that the digital multimeter ranges at 7.0±0.1V.

4) Tune the receiving frequency of the unit at 87.5MHz.

5) Check that the digital multimeter ranges under 1.5V.

3. CLOCK Check

Requirements

• Measuring instrument: Frequency counter

Test point: CLOCK (IC801 24PIN), GND

1) Connect the frequency counter between CLOCK and GND.

2) Set the function to AM, and tune the receiving frequency of the unit at 1710kHz.

3) Check that the frequency counter ranges at 2160kHz±45Hz.

– 40 –

<AM Adjustment>

Make the following preparations for AM adjustment.

Preparations

• Standard Signal Generator (S.S.G.) / Loop antenna / Oscilloscope / Millivoltmeter / Dummy resistance (6ý)

1) Connect the unit and measuring instruments as shown in the diagram below.

2) Position the loop antenna connected to S.S.G. and the one connected to the unit 60cm apart.

4. IF Adjustment

Requirements: As instructed in preparations.


1) Set S.S.G. to AM; carrier of 1000kHz with 30% modulation, and source at 1kHz, position output at maximum.

2) Tune the receiving frequency of the unit at AM1000kHz.

3) While monitoring the waveform at 1kHz through the oscilloscope, lower the output level of S.S.G. maximum (till a certain degree of

noise is monitored).

4) Adjust L802 so that the millivoltmeter points maximum.

5. Tracking Adjustment


• Adjustment point: L952 / L953

1) Set S.S.G. to AM; carrier of 1000kHz with 30% modulation, and source at 1kHz, position output at maximum.





5) Set S.S.G. to AM; carrier of 600kHz with 30% modulation, and source at 1kHz.



8) Repeat above steps 1) to 7) 2 to 3 times.

6. Auto-Stop Check


1) Set S.S.G. to AM; carrier of 1000kHz with 30% modulation, source at 1kHz, and output of 40 to 65dBuV.

2) Apply the tuning search function, and check that the unit automatically stops at AM1000kHz.

– 41 –

<FM Adjustment>

Make the following preparations for FM adjustment.

Preparations

• Standard Signal Generator (S.S.G.) / Loop antenna / Oscilloscope / Millivoltmeter / Dummy resistance (6ý)

1) Connect the unit and measuring instruments as shown in the diagram below.

2) Connect the output of S.S.G. to the antenna input of the unit.

7. Tracking Adjustment



1) Set S.S.G. to FM; carrier of 87.5MHz with 75kHz modulation, and source at 1kHz, position output at maximum.

2) Tune the receiving frequency of the unit at FM87.5MHz.




8. Separation Check


1) Set S.S.G. to FM; carrier of 98MHz with 67.5kHz modulation, source at 1kHz, and output at 74dBuV.

2) Switch S.S.G. to PILOT ON, and set PILOT at 7.5kHz.

3) Tune the receiving frequency of the unit at FM98MHz.

4) Allow the output of S.S.G. only from Lch, and check that the difference between Lch and Rch is 25dB or above.

5) Apply the above check to Rch.

9. Auto-Stop Check


1) Set S.S.G. to FM; carrier of 98MHz with 75kHz modulation, source at 1kHz, and output at 10 to 35dBuV or less.

2) Apply the tuning search function, and check that the unit automatically stops at FM98MHz.

– 42 –

<DECK Section>

10. Tape Speed Adjustment (DECK 2)

Requirements

• Measuring instrument: Wow and flutter meter (frequency counter)

Test tape: TTA-100 (3kHz)

Test point: HP OUT

Adjustment point: DECK MOTOR SFR

1) Connect the wow and flutter meter to HP OUT of the unit.

2) Insert the test tape (TTA-100) to DECK 2. Play back the middle part of the tape,

and adjust DECK MOTOR SFR so that the level 3,000Hz±45Hz is monitored.

11. Tape Speed Check (DECK 1)

Requirements: Same as the above, 10.

1) Insert the test tape (TTA-100) to DECK 1. Play back the middle part of the tape, and check that

the level is ranged within ±55Hz as compared to the speed monitored for DECK 2.

12. Wow and Flutter Check (DECK 1 and DECK 2)

Requirements: Same as the above, 10.

1) Connect the wow and flutter meter to HP OUT of the unit.

2) Set the wow and flutter to JIS for INDICATOR and to W RMS (WTD) for mode.

3) Play back the middle part of the test tape (TTA-100), and check that the level ranges under 0.25%.

13. Head Azimuth Adjustment (DECK 1 and DECK 2)

Requirements

• Measuring instrument: Oscilloscope

Test tape: TTA-300 (10kHz)

Test point: TP8 (Lch), TP9 (Rch)

Adjustment point: Head azimuth adjustment screw

1) Connect the probe CH1 of the oscilloscope to TP8 (Lch) and CH2 to TP9 (Rch).

2) Set V mode of the oscilloscope to ADD.

3) Insert the test tape (TTA-300) to DECK 1. Forward and play back the middle part of the tape,

and adjust the head azimuth adjustment screw so that the waveform achieves its maximum level

when 10kHz is played.

4) After adjustment, secure the screw with glue (1600B).

5) Apply the above steps 3) and 4) to DECK 2.

14. Playback Frequency Check (DECK 1 and DECK 2)

Requirements

• Measuring instrument: Millivoltmeter

Test tape: TTA-300 (315Hz / 10kHz)

Test point: TP8 (Lch), TP9 (Rch)

1) Connect CH1 of the millivoltmeter to TP8 (Lch) and CH2 to TP9 (Rch).

2) Insert the test tape (TTA-300) to DECK 1, and play back 315Hz and 10kHz.

3) Check that the level of 10kHz is ranged within ±3dB compared to the output level of 315Hz

as a reference.

4) Apply the above steps 2) and 3) to DECK 2.

– 43 –

15. Playback Sensitivity Check (DECK 1 and DECK 2)

Requirements

• Measuring instrument: Millivoltmeter

Test tape: TTA-200 (400Hz)

Test points: TP8 (Lch), TP9 (Rch)


2) Insert the test tape (TTA-200) to DECK 1 and play back.

3) Check that the output level is ranged within 110mV±3dB.

4) Apply the above steps, 2) and 3) to DECK 2.

16. Record/Playback Frequency Response Adjustment (DECK 2)

Requirements

• Measuring instrument: Millivoltmeter, Audio signal

oscillator (low frequency

oscillator), Attenuator

Test tape: TTA-602 (NORMAL)

Test points: TP8 (Lch), TP9 (Rch)

Input point: AUX (1kHz / 8kHz)

Adjustment points: SFR451 (Lch), SFR452 (Rch)


2) Connect the output of the oscillator to the attenuator, and then the attenuator to AUX of the unit.

3) Insert the test tape (TTA-602) to DECK 2, and record 1kHz signal from AUX.

4) Adjust the attenuator so that the output levels at TP8 and TP9 are ranged at 10mV.

5) Record 1kHz and 8kHz alternatively.

6) Play back the tape. Adjust SFR451 (Lch)/SFR452 (Rch) so that the playback output level of 8kHz is ranged within 0±1dB

compared to the playback output level of 1kHz as reference.

17. Record/Playback Sensitivity Check (DECK 2)

Requirements

• Measuring instrument: Same as the above, 16

Test tape: TTA-602 (NORMAL)

Test point: TP8 (Lch),TP9 (Rch)

Input point: AUX (1kHz)

1) Insert the test tape (TTA-602) to DECK 2, and record 1kHz signal from AUX.

2) Adjust the attenuator so that the output levels at TP8 and TP9 are 100mV.

3) Play back 1kHz, and check that the output level is ranged within 0dB±2.5dB compared to the recording output level.

– 44 –

<FRONT Section>

18. Clock Adjustment

Requirements

• Measuring instrument: Frequency counter

Test tape: CLOCK, GND

Adjustment point: L951

1) While pressing the UP and POWER button,

insert the AC plug to the outlet.

2) Adjust L951 so that the frequency counter indicates the

frequency level within 72.743±0.073Hz.

18CLOCK

GND

L95118

FRONT C.B PATTERN SIDE

FRONT C.B PARTS SIDE

– 45 –

CD TEST MODE

CD TEST MODE Ver. 3.01. Starting CD Test Mode

While pressing and holding down the CD OPEN/CLOSE button, insert the AC plug to outlet.When test mode starts, the message, “ TEST” appears on the display.

2. Exiting CD Test ModePress the other function button, POWER button or remove the AC plug from outlet.

3. Function of CD Test Mode

No Mode Function Key Display Movement Check

1 Start Mode All lit. FL all lit. • FL check• Microcomputer check

2 Search Mode STOP button READING • LD constantly lit. • APC circuit check• Focus search continuous • Laser current electricity measurement

movement *1, 2 • Focus search waveform check• Spindle motor continuous kick • Focus error waveform check

(DRF is ignored during search mode.)

3 Play Mode PLAY button Normal • Normal playback • Each servo circuit check• If TOC READ is unavailable, • DRF check

focus search is continued.

4 Traverse PAUSE Normal • Tracking servo OFF/ON • Tracking balance checkMode button OFF and ON is repeated by every

press of the PAUSE button.

5 Sled mode FF button TEST • PU moves to the innermost position. *3At the same time, lens is kicked • Sled circuit checktoward inner position.

• Tracking circuit check

RWD button TEST • PU moves to the outermost position. *3• Mechanism movement check

At the same time, lens is kicked toward • PU check

outer position.

6 Spindle mode All lit. • When the button is pressed at the first • Spindle circuit checktime, spindle motor rotates forward(at rough speed).At the second press, rotation is reversed.At the third press, rotation stops.

* 1 … When Focus Search operates continuously more than 10 minutes, the protection circuit is activated due to heat generation of the driver IC.In this case, turn off the power, wait for approximately 10 minutes so that heat is released, and then restart.

• Spindle motor checkREC MUTE

* 2 … When Focus Search fails three times, the gain is switched for CD-RW at the fourth time.

* 3 … Be careful not to damage the gear because the sled motor rotates while the FF or RWD button is being pressed even if the pickup is located inthe innermost track or the outermost track.

button

REC/

mtneo

• RF frequency check (approx. 1.7Vp-p)

– 46 –

MECHANICAL EXPLODED VIEW

1

2

7 6212

14

15

16

18

19

20

22

25 26

29

30

31

32

36

37

38

34

35

33

4041

42

43

46

47

47

28

28

45

48

49

10

23

23

24

24

44

549

50

52

5353

46

2157

58

CX-SNR20LH

CX-SND20U

A

a

a

AA A

A

G

F

C

F

F

D

F

A

F

EE

F

EE

F

A

A

8

6

4

3

28

2827

5

11

12

13

B

B

B

HH

51

39

17

CX-SNR20LH

CX-SND20U

CX-SND20U

CX-SNR20LH

55

56

5960

6161

F




– 47 –

MECHANICAL PARTS LIST

!"! !"!#$%& " '" #'#$%(

"(&' "('"'" ') !"!"'!"!" "' &' ' &'

' $%## '## '$%$%$% !* **&*' !+" ,* **'# $

$ $+-, ## $#)$# )+., # &+, ' '(" !

#("!" %)(#)()( !# % %$%! !"* **&* ! !") ))

# '' ''# "'" ' ! * **&*' #! '/# '/# '/#%!'

/#%) $"'#"(+,'#"(+,' $%"' !"' !' !"'"$%'

"$"'##"$"' ##"$"'# "' "' %"+,' ! "' #+&$,' #+&$,' '




– 48 –

#.!* $## 0.!* #&".!*#!.##!".# ##&.!* (#!".# # &.

– 49 –

Basic color symbol Color Basic color symbol Color Basic color symbol ColorB Black C Cream D OrangeG Green H Gray L BlueLT Transparent Blue N Gold P PinkR Red S Silver ST Titan SilverT Brown V Violet W White

WT Transparent White Y Yellow YT Transparent YellowLM Metallic Blue LL Light Blue GT Transparent GreenLD Dark Blue DT Transparent Orange GM Metallic GreenYM Metallic Yellow DM Metallic Orange PT Transparent PinkLA Aqua Blue GL Light Green HT Transparent GrayHM Metallic Gray NH Champagne Gold M Wood Pattern

COLOR NAME TABLE

– 50 –

TAPE MECHANISM EXPLODED VIEW

1

6

6

3

3

10

15

11

16

17

18

19

19

18

40

41

2022

23

39

21

25

26

27

28 29

30

31

32

33

34

35

36

37

38

24

12

1314

7

9

8

2

5

4




– 51 –

TAPE MECHANISM PARTS LIST

!" #$ % ! &

!""&' &() *&'"()(*&'"()("$*&'(#)("" ###& *&'()(+ ,+&

,! " )"&!*$ !"# $, $ ,+*#&(#)( %

& %+"+ ,""!$ ,## " !",+",+&

"

– 52 –

GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE)

Insert a flat-bladed screwdriver into the position indicated by thearrows and remove the panel. Remove the screws of each speakerunit and then remove the speaker units.

Type.1

Type.3

Type.2

Type.4

Fig-1 Fig-2

Fig-3

How to Attach the PANEL, FR

Attach the PANEL, FR to the PANEL, SPKR. Tap the fourcorners of the PANEL, FR with the plastic hammer to fit thePANEL, FR into the PANEL, SPKR completely.

1 2 3

Insert a flat-bladed screwdriver into the position indicated by thearrows and remove the panel. Turn the speaker unit to counter-clockwise direction while inserting a flat-bladed screwdriver intoone of the hollows around speaker unit, and then remove the speakerunit. After replacing the speaker unit, install it turning to clockwisedirection until "click" sound comes out.

Remove the grill frame and four pieces of rubber caps by pullingout with a flat-bladed screwdriver. Remove the screws from holewhere installed rubber caps. Insert a flat-bladed screwdriver intothe position indicated by the arrows and remove the panel. Re-move the screws of each speaker unit and then remove the speakerunits.

TOOLS

1 Plastic head hammer2 (() flat head screwdriver3 Cut chisel

How to Remove the PANEL, FR

1. Insert the (() flat head screwdriver tip into the gapbetween the PANEL, FR and the PANEL, SPKR. Tap thehead of the (() flat head screwdriver with the plastichammer head, and create the clearance as shown in Fig-1.

2. Insert the cut chisel in the clearance, and tap the head ofthe cut chisel with plastic hammer as shown in Fig-2, toremove the PANEL, FR.

3. Place the speaker horizontally. Tap head of the cut chiselwith plastic hammer as shown in Fig-3, and remove thePANEL, FR completely.




– 53 –

SPEAKER PARTS LIST (SX – NR20 / ND20)

!"!#$%"$%$!%&$ $! $$#%$"

$ '$&'!$#$# ("")!" $"" )*&$$#!& '*$$"!&'

– 54 –




ACCESSORIES PARTS LIST

!"#$$%"!&'!(%&!$' (!&!) '(#!&$!)'&(#

– 55 –




OTHER PARTS LIST (CX – ND20 / NR20)

!"#"" #$$%" " % "

" % " %"!" %""&%'!! %" % %()* %""#% ! %" # & #&$%#&$$ ' ''!'

% " """ % "# % %

2-11, IKENOHATA 1-CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111

9301978 921388

service manual - diagramasde.com nd20.pdfservice manual a cd stereo system nsx-d20 nsx-r20 s/m code...

Documents