Pioneer PD-54 User manual

Service
COMPACT DISC PLAYER
@ PD-54/KU
dW) PIONEER’
~ The Art of Entertainment
ORDER NO.
ARP2730
D-5S4
PD-SSO2 _
PD-S8s0e-G
PD-54, PD-S802 AND PD-S802—G HAVE THE FOLLOWING :
Model
Type Power Requirement Remarks
| pD-54 | PD-Sso2 | PD-S802-G | °
AC120V only
AC220-230V, 230-240V (switchable) *
AC220- 230V, 230-240V (switchable) *
AC220-230V, 230-240V (switchable)
AC1I0V, 120- 127V, 220V, 240V (switchable)
* Change the connection of the-power transformer’s primary wiring.
® This manual is applicable to the following : PD-54/KU; PD-S802/HB, HEM, HL and SD;
PD-—S802—G /HEM.
® For the following : PD~S802/HB, HEM, HL and SD; PD-S802-—G/HEM, refer to page 40.
CONTENTS
1, SAFETY INFORMATION «:++++1ssrecseereeesseeseeescees 2
2. EXPLODED VIEWS,
PACKING AND PARTS LIST eee cee n ees ceecsccens 4
3. DISASSEMBLY <cccceccececccceececceseeceseescesenseeseees 9
4, SCHEMATIC AND
PCB CONNECTION DIAGRAMS -::+------+++- 10
5 PCB PARTS LIST si-esteaiatantlaversiiwstassersiarivars 29
6. ADJUSTMENTS = #2 ses2s00eec-ssceseees jieitiioend ove 31
7. FOR PD- S802/HB, HEM, HL, SD AND
PD—S802=G/MEM +ssceee-eeewosertnngincnendens 40
6 PANEL FACILITIES Hh GrnGeinismeionen 43
9: SPECIFICATIONS Fitecnnsteetosea ents or aaascindeses 44
PIONEER ELECTRONIC CORPORATION = 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach. California 90801 U.S.A.
. PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L8R OP2 Canada
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetbergiaan 1,9120 Melsele, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
© PIONEER ELECTRONIC CORPORATION 1993
IFJ APR. 1993 Printed in Japan

SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void
the warranty. If you are not qualified to perform the repair of this product properly and safely, you should
Vs
not risk trying to do so and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder, Also, when soldering do not inhale any smoke or fumes produced.
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols ~-f&—- (fast operating fuse) and/or -HE—# (slow operating fuse) on PCB indicate that replacement parts
must be of identical designation.
REMARQUE
(POUR MODELE CANADIEN SEULEMENT)
Les symboles de fusible -H&—H- (fusible de type rapide) et/ou -§E—=# (fusible de type lent) sur CCI indiquent que les
piaces de remplacement doivent avoir la méme désignation.
(FOR USA MODEL ONLY)
1.SAFETY PRECAUTIONS |
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed |
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5mA.
z Reading should
Leakage | "ot be above
O.5mA
Test all
_ exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
AC Leakage Test
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO-
TENTIAL SHOCK HAZARD AND MUST BE COR-
RECTED BEFORE RETURNING THE APPLIANCE TO
THE CUSTOMER.
2.PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob-
tained by using replacement components rated for vol-
tage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in
this Service Manual.
Electrical components having such features are
identified by marking with a A\ on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same safety characteristics as the
PIONEER recommended replacement one, shown in
the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product Safety is continuously under review and
new instructions are issued from time to time. For
the latest information, always consult the current
PIONEER Service Manual. A subscription to, or ad-
ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.

— VARO!
AVATTAESSA JA SUOJALUKITUS
OHITETTAESSA OLET ALTTIINA
NAKYMATTOMALLE LASERSATEILYLLE.
ALA KATSO SATEESEEN.
r-ADVERSEL:
USYNLIG LASERSTRALING VED ABNING
NAR SIKKERHEDSAFBRYDERE ER UDE AF
FUNKTION UNOGA UDSAETTELSE FOR
STRALING.
VARNING!
OSYNLIG LASERSTRALNING NAR DENNA
DEL AR OPPNAD OCH SPARREN
AR URKOPPLAD. BETRAKTA EJ STRALEN.
LABEL CHECK
CLASS 1
LASER PRODUCT
VRW-328
REAR VIEW
ADVARSEL
USYNLIG LASERSTRALING VED ABNING NAR SIKKERHED SAF-
BRYDERE ER UDE AF FUNKTION,
UNOGA UDSATTELSE FOR STRALING.
VORSICHT!
UNSICHTRARE LASER-STRAHLUNG TAITT AUS, WENN DECKEL
(ODER KLAPPE) GEGFENET IST! NICHT DEM STRAHL AUSSE TZEN!
VRW1094
HEM type
(FOR EUROPEAN MODEL ONLY)
HB and HEM types
LASERS
Kuva 1
Lasersateilyn
varoitusmerkki
CAUTION
INVISIBLE LASER
RADIATION WHEN OPEN,
AVOID EXPOSURE
TO BEAM
HB type
WARNING!
DEVICE INCLUDES LASER DIODE WHICH
EMITS INVISIBLE. INFRARED RADIATION
WHICH IS DANGEROUS TO EYES. THERE !S
A WARNING SIGN ACCORDING TO PICTURE
7 INSIDE THE DEVICE CLOSE TO THE LASER
DIODE.
IMPORTANT
THIS PIONEER APPARATUS CONTAINS
LASER OF CLASS 1.
SERVICING OPERATION OF THE APPARATUS
SHOULD BE DONE BY A SPECIALLY
INSTRUCTED PERSON.
LASER DIODE CHARACTERISTICS
MAXIMUM OUTPUT POWER: 5 mw
WAVELENGTH: 780-785 nm
LASER-
Picture 1
Warning sign for
laser radiation
PRW1018
. Laser Interlock Mechanism
. When the cover is opened with the servo mechanism
HEM type
VARO!
Avattaessa ja suojalukitus ohitetta-
essa olet alttiina naikymaéttémdlle
lasersdteilylle., Ala katso sdteeseen.
bis VARNING! pean
Osynlig laserstrdlning nér denna del
&r Oppnad och sparren &r urkopplad,
Betrakta ej strdlen. PRWI233
Additional Laser Caution
The position of the switch (S601) for detecting loading
completion is detected by the system microprocessor, and
the design prevents laser diode oscillation when the
switch (S601) is not CLMP terminal side (when CLMP
signal is OFF, that is, high level). -
Thus, the interlock will no longer function if the switch
(S601) is deliberately set to CLMP terminal side (if CLMP
signal is low level).
In the test mode +, the interlock mechanism will not
function.
Laser diode oscillation will continue, if pin 1 of M51593FP
( 1C101 ) on the preamplifier board loaded on pickup
assembly are connected to GND, or pin 19:is connected to
low level ( ON ), or else the terminals of Q101 are shorted
to each other ( fault condition ).
block removed to be turned over, close viewing of the
objective lens with the naked eye will cause exposure to a
Class 1 laser beam.
* : Refer to page 32.

2. EXPLODED VIEWS, PACKING AND PARTS LIST
NOTES:
@ Parts marked by “NSP” are generally unavailable because they are not in our Master Spare Parts List.
@ The A\ mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing,
be sure to use parts of identical designation.
@ Parts marked by “@ ” are-not always kept.in.stock. Their delivery time may be longer than usual or they may be unavailable:
2.1 EXTERIOR SECTION AND PACKING
Parts List
Mark No. Description Part No.
1 ‘Front panel 54 PAN1286
2 Name plate RAN1008
3 Function panel 54 PNW2332
4 Display window PAM1622
5 LED lens PNW2019
6 Power button 78 PAC1743
7 AUDIO TRANS. PWZ2545
PCB assembly
8 Function button 78 PAC1744
NSP 9 SW PCB assembly PWZ2543
10 Screw PPZ30P150FMC
11 FUNCTION PCB assembly PWZ2542
12 Tray panel PNW2280
13° Screw IBZ30PO60FCC +
14 Screw BBT30PO080FCC
15 Tray lens PNW2242
16 — SERVO TRANS. PWZ2546
PCB assembly
17. Screw IBZ30PO080FCC
18 = Insulator PNW2020
19 Screw IBZ30P150FCC
20 Screw IBZ30PO060FCC
NSP 21 Loading mechanism PXA1521
assembly TT
22 Output button PAC1661
23 Screw BBZ30P080FCC
24 = Indicator lens PEA1206
25 Screw PDZ30P050FCC
NSP 26 Under base PNAI1973
27 ‘Panel stabilizer L PNW2281
NSP 28 COAXIAL OUTPUT PWZ2502
PCB assembly ;
29 ~=Screw FBT40PO80FZK
30 Side sheet PNM1226
31 Bonnet PYY1148
NSP. 32 Audio angle PNA1I968
33 eoeeee
Ay, 34 Power transformer (AC120V) PTT1269
4 35 Power transformer (AC120V) PTT1270
36 Stopper PNM1134
NSP . 37 PCB spacer PNY - 404
38 MAIN PCB assembly PWZ2500
NSP 39 Cushion (3.5) PEB1110
NSP .40 PCB holder PNW2100
41 AUDIO PCB assembly PWZ2544
Mark No. Description Part No.
A 42 AC power cord PDG1015
A. 43 ~~ Cord stopper CM-22C
NSP 44 _ Rearbase 54 | PNA2015
45 Screw PBA1071
46‘ Panel stabilizer R PNW2306
47 Side spacer PEB1247
NSP 48 Cord holder DNF1128
49 Cord clamper RNH- 184
50 Mirror mat sheet Z23 ~ 007
51 Cord with mini plug PDE- 319
52 Cord with plug PDE1001
53 Operating instructions PRB1196
(English)
54 ~ Remote control unit PWW1072"
55 Battery cover PZN1001
56 Protector F PHA1251
57 Protector R PHA1245
58 CD packing case 54 PHG1956
NSP 59 Battery (RO3, AAA) VEM- 022
® Packing

® Exterior Section
NOTE: Screws adjacent to W mark on the product
are used for disassembly.
‘AC power cord!
‘
[Po a ee ee
f Fuse holder i
NP
i ij
21 Loading mechanism assembly TT
(See section 2.2)
Note : The stopper consist of the big ring
part and the smail ring part.
if you stick the stopper to the leg,
stick the big ring part to the front
leg, and the small ring part to the
rear leg,
tr ;
2 TR, GS BQ C
3) os
; iit
(For the (For the
™~ +. front leg) rear leg)
10S,
en

2.2 LOADING MECHANISM
ASSEMBLY TT
Parts List |
Mark No. Description Part No. Mark No. Description Part No.
1 Lever switch (S601) DSK1003 40° aaa gee
2 ~~ Float screw PBA1027 NSP 50 Mechanism board assembly PWX1192
3. Rubber belt PEB1186 NSP 51 Binder PEC- 107
4 Motor pulley PNW1634 NSP 52 Servo mechanism PXA1479
5 Drive gear PNW1996 . _ assembly TT92
6 Synchronized lever PNW2168 53 Stop ring YE20S
7 ~~ Gear pulley PNW1998 54 Shaft holder PNB1382
8 SW head PNW1999 55 eee
9° Float base : PNW2000 56 Screw BPZ26PO60FMC
10 Left cam PNW2001 57 Screw BBZ26P060FMC
58 Earth lead PDF1148
11 Right cam PNW2002 : 59 Caution label PRW1244
12 ‘Float spring PBH1120
13. Lock spring PBH1121
14 Float rubber PEB1014 P :
15 Table rubber sheet PEB1181 * How to install the disc table
Use nippers or other tool to cut the two sections
16 Tray PNW2003 marked (A) in figure [1]. Then remove the spacer.
17.‘ Table guide PNW2004
. Eee Scie While supporting the spindle motor shaft with
the stopper, put the spacer on top of the carriage base
and stick the disc table on top (takes about 9Kg
(0.75W, LOADING)
20 ~~‘ Float rubber PEB1031 -
21 Float rubber PEB1170 haga se
22 Screw BMZ26P040FMC ppacet:
23 Screw IPZ26PO60FCU
24 Screw IPZ20PO80FMC
25 Turn table assembly PEA1165
26 ere ar {pressure of about 9Kg)
NSP 27 Loading base PNW1995 F disc adi
NSP 28 ~~ Table shaft holder PXA1383
NSP 29 Tum table (AL) PNR1035
30 Carriage D.C. motor(0.3W) PXM1027
31 Pinion gear PNW2055 rosa PCB
32 D.C. motor assembly PEA1236 Carriage
(SPINDLE, with oil) asad pate:
33 Carriage base PNW2058
34 Disc table PNW1067
35 Screw JFZ20P030FNI
36 =©Screw JFZ17PO25FZK
37 Gear 3 PNW2054
38 Gear2 PNW2053
39 Washer WT12D032D025
40 Pickup assembly PEA1179
4] Guide bar PLA1094
42 Gearl PNW2052
NSP 43 Gear stopper PNB1303
44 Screw BPZ20PO060FMC
45 Earth spring PBH1132
NSP §46 Mechanism base TT PNB1431
47 Screw BPZ26P100FMC
48 PWB holder PNW2057

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3.1 REMOVE THE TRAY PANEL AND THE 3.2 INSTALL THE TRAY PANEL AND THE
TRAY LENS TRAY LENS
Hold the tray panel with your hands as shown in Fig. 1, Align the tray panel with the grooves located at both edges
and grasp the tray with your thumbs and then lift the tray of the tray while holding the tray lens with your fingers,
panel up while pulling it toward you with the other fingers. and then press it down till it stops.(Fig. 3)
(Fig. 2)
Tray lens
Tray panel
Fig. 3
Hold the tray panel and the tray as shown in Fig. 4, and
Fig. 1 slide them down till you hear a click sound while pressing
, strongly with your thumbs. (Fig. 5)
Fig. 2
Fig. 4
Tray panel
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Fig. 5
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4. SCHEMATIC AND PCB CONNECTION DIAGRAMS
4.1 MAIN, COAXIAL OUTPUT, AUDIO TRANS., SERVO TRANS., FUNCTION, SW AND MECHANISM BOARD AND PICKUP ASSEMBLIES
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: Carriage Motor Route
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MAIN, COAXIAL OUTPUT, AUDIO TRANS.,
SERVO TRANS., FUNCTION, SW
AND VOLTAGE SW PCB ASSEMBLIES,
8
MECHANISM BOARD AND PICKUP ASSEMBLIES
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MAIN PCB ASSEMBLY
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13

For SCHEMATIC DIAGRAM
Note: (Type 4)
1. When ordering service parts, be sure to refer to
“PARTS LIST of EXPLODED VIEWS” or “PCB
PARTS LIST”.
2. Since these are basic circuits, some parts of them or the
vaiues of some components may be changed for improve-
ment.
3. RESISTORS:
Unit: &:kQ, M:MQ, or Q unless otherwise noted.
Rated power: 1/4W, 1/6W, 1/8W, 1/10W unless otherwise noted.
Tolerance:(F): + 1%, (G):+2%, (K):+ 10%, (M):+20% or +5%
unless otherwise noted.
4. CAPACITORS:
Unit: p:pF or 1 F unless otherwise noted.
Ratings ; capacitor (uF) /voltage (V) unless otherwise noted,
Rated voltage : 50V except for electrolytic capacitors.
‘5. COILS:
Unit: m:mH or |.H unless otherwise noted.
6. VOLTAGE AND CURRENT:
YJ : DC voltage (V) in PLAY mode unless otherwise noted.
©mAor+mA: DC current In PLAY mode unless otherwise noted,
Value in({ ) {is DC current in STOP mode.
7. OTHERS:
@ » : Signal route.
©@ : Adjusting point.
@ ¥ (Red) : Measurement point.
@The A mark found on some component parts Indicates the im-
portance of the safety factor of the parts. Therefore, when replacing,
be sure to use parts of identical designation.
8. SWITCHES (Underline Indicates switch position):
OUT OF P.C.BOARD ASSEMBLY
S601: CLAMP
MECHANISM BOARD ASSEMBLY
$610; INSIDE
FUNCTION PCB ASSEMBLY
$701; OUTPUT SELECTOR
$702: PLAY( > )
$703: PAUSE( HI)
$704: OPEN/CLOSE( 4 )
$705: TRACK /MANUAL SEARCH( >> Pi )
$706: TRACK /MANUAL SEARCH( Id <4)
$707: STOP( MH)
SW PCB ASSEMBLY
$751: POWER STANDBY ON/OFF
S752. DISPLAY ON/OFF
$753: TIME
$754; REPEAT
9. For SCH-C] on the schematic diagram
*SCH-D indicates the drawing number of the schematic diagram.
(SCH stands for schematic diagram.)
14
For PCB CONNECTION DIAGRAMS
P.C.B. pattem diagramy Corresponding part
a wie
Cc » Mylar capacttor
Q
a’ ~ Electrolytic capacttor
*wy (Non polarized)
Electrolytic capacttor
(Nolseless }
ae capacitor
ae )
or capacitor
or
Power
capacitor
Pot echt pani
S————) el ieee
cs
mi | te
cia
So [=|
1. This P.C.8. connection diagram Is viewed from the parts mounted side.
2. The parts which have been mounted on the board can be replaced with
those shown with the corresponding wiring symbols listed In the above Table.
3. The capacttor terminal marked with [__]shows negative terminal.
4. The diode marked with © shows cathode side.
5, The transistor terminal marked wth [—_}shows emitter.

WAVEFORMS
Note:The
encircled
numbers
denote
measuring
points
in
the
schematic diagram.
TP1-Pin 1: PLAY MODE
(RF)
500mVidiv 500nsec/div
OO
1Vidiv 200msec/div
TP1-Pin 1: TRACK SEARCH MODE
(RF)
1C202-Pin 9: PLAY MODE
; (FODR)
500mV/div 200 usec/div
1Vidiv 1msec/div
TP1-Pin 6 : PLAY MODE 1C202-Pin 3: PLAY MODE
(FOER) (TRDR)
100mVidiv:. 10msec/div
500mV/div-- 1msec/div-:
TP1-Pin 2: PLAY MODE IC202~Pin 3 : 50T- JUMP (*1) MODE
(TRER) (TRDR)
1Vidiv 10msec/div
500mVidiv: 1msec/div
TP1-Pin 2: 50T-JUMP (*1) MODE
(TRER)
1Vidiv imsec/div
IC202- Pin 4: PLAY MODE
(SPDR)
1Vidiv 50msec/div
!
|
PD-54
*1 SOT- JUMP:After switching to the pause mode, press the
manual search key.
*2 FOCUS - IN:Press the key without loading a disc.
1C202-Pin 9 : FOCUS-IN (*2) MODE
(FODR)
1C202-Pin 4: TRACK SEARCH MODE
(SPDR)
2Vidiv 50msec/div
1C201- Pin 4: PLAY MODE
(CADR)
200mVidiv 2sec/div
1C201-Pin 4: TRACK SEARCH MODE
(CADR)
2Vidiv. 500msec/div---
1C151- Pin 32: PLAY MODE
(EFM)
2Vidiv 500nsec/div. :.-
1C832- Pin 12: PLAY MODE (1kHz)
(LO — ) (D/A DATA OUT)
1Vidiv 200 usec/div
15

(6)
“““WER ON:Plug AC cord into AC wall socket.
‘V¥ER OFF:Unplug AC cord form AC wall socket.
°'332-Pin 13: PLAY MODE (1kHz)
+4)(D/A DATA OUT)
‘iv 200 psec/div
1C301- Pin 35 : PLAY MODE (1kHz)
(BCLk)
2Vidiv 500nsec/div
1¢301~Pin 32 : PLAY MODE (1kHz)
(LRCK)
2Vidiv. 10 usec/div*
1C301-Pin 34: PLAY MODE (1kHz)
(DATA)
2Vidiv- 500nsec/div
PIN- OUTPUT : PLAY MODE(1kHz)
1Vidiv 200‘ sec/div
1C351-Pin 1: POWER ON(*3)
(REST)
2Vidiv 100msec/div
1C351-Pin 1: POWER OFF(*4)
(REST)
2Vidiv 100msec/div
: TRACK SEARCH MODE
Upper : TP1- Pin 1 (RF) 1V/div
Lower: 1C151:-- Pin 29.(MIRR)
: PLAY MODE
Upper: TP1~- Pin 1 (RF) 1V/div
Lower : 1C151-Pin 30 (DFCT)
5V/div:.20041:sec/div
1C301- Pin 4: PLAY MODE
(MDP)
2Vidiv 2 usec/div .
1C301-Pin 20: PLAY MODE
(PCO)
2Vidiv 10 usec/div
TE,
Hi

1
2
3
4
5
6
LF
SW PCB
PD-54/KU ASSEMBLY MAIN PCB MAIN PCB
MAIN
PCB
ASSEMBLY
—_pp-sgo2/HL
SD
ales
pe aS
DIGMAL GUE" yO CONTROL! cD- DECK FUNCTION PCB ASSEMBLY
OUT IN | SYNCHRO
PD-54/KU, OPTICAL
PD-S802/ HB
.
A
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PD-54/KU,
PD-S$802/HL,SD
SERVO TRANS.
PCB
ASSEMBLY
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FUNCTION
PCB
ASSEMBLY
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7
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IC151
SW
PCB
ASSEMBLY
:
Punts
6
PWZ2S42-
coRWZOSSt-—
PWZ2SSZ
=
IC202
«1
PD-54/KU,
PD-$802/HL.SD
|
JUMPER
PD-
S802/HB,HEM
|
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|
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AUDIO PCB
ASSEMBLY
CN801
VR151
PICKUP
me
ASSEMBLY
VR152
$601 :
CLAMP
SW
SERVO
TRANS.
C
LOADING
MECHANISM
PCB
ASSEMBLY
C=
D.C.
MOTOR
TP2
|ic301
BOARD
ASSEMBLY
MECHANISM
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ASSEMBLY
|
COAXIAL
OUTPUT
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ASSEMBLY
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MAIN
PCB
FUNCTION
PCB
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ASSEMBLY
ASSEMBLY
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CN202
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10351
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MAIN
PCB:
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ASSEMBLY
PD-54/KU,
PD-$802/HBHEM
This
P,
C.
B.
connection
diagram
is
viewed
from
the
parts
mounted
side
CN11
PD-S802/HB
<
/HB.HEM,
FUNCTION
PCB
FUNCTION
PCB
aoe!
PD-54/KU
_
JUMPER
PD-S802-G/HEM
ASSEMBLY
J701
ASSEMBLY
J702
PD-S802/HB.HEM.HLSD]
ic3y
1
2
3
4
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6
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7 8 9 10 11 12
2B MAIN PCB
ZY. ASSEMBLY
CN352
PCB - 1
AUDIO PCB AC POWER
ASSEMBLY CORD
CNS901
WER -
A\ Powe TENSES _
SERVO_TRANS.
PCB ASSEMBLY
S5: VOLTAGE
SELECTOR
PHZCS45-—
$6 : VOLTAGE
MAIN
PCB
SELECTOR
ASSEMBLY
CN535
PwieS47—
PWZ2549-
PHZeSES—
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AUDIO TRANS.
PCB ASSEMBLY
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Li It be changed as follows. .
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ai OUTPUT. S 2. Remove the bonnet. ; : |
PNPI328-A 3. Change the position of ne edit la @ as follows. SERVO TRANS. |
PCB ASSEMBLY ||
ee Oc !
|
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AUDIO
PCB
4. Stick the line see ania on the rear panel. ASSEMBLY pyzaS {
Description CN901 PWZ2547- | a
220V label Teens 2 |
AAX- 192 | 240V label PHPeAS6E- |
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25

4.2 AUDIO PCB ASSEMBLY
PCB - 2
AUDIO PCB ASSEMBLY
AUDIO TRANS.
PCB ASSEMBLY
J3
Q803
Q842
10844
IC903
Q840
1C832
(C854
IC905
IC802
wi z =|
IC801
Q801
| OUT
Ic904
IC855
IC831
Q839
ASSEMBLY
J301
MAIN PCB
Q841
Q843
Q833
Q831
PNPI329~-B
This P. C. B. connection diagram is viewed from the parts mounted side.
26