Pioneer PD-M427 User manual

ORDER NO.
PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2004
RRV2905
MULTI COMPACT DISC PLAYER
PD-M427RFXJ
T – ZZR MAR. 2004 Printed in Japan
PD-M427
For details, refer to "Important symbols for good services" .
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6
MULTI COMPACT DISC PLAYER
STANDBY/ON
DISC TRACK MIN SEC
1-BIT•DLC DIRECT LINEAR CONVERSION
EJECT REPEAT PROGRAM DISC TRACK/MANUAL
RANDOM HI–LITE
STOP PLAY/PAUSE
-DISC
MULTI CD
041 ¢¡
Type
Model Power Requirement The voltage can be converted by the following method.
PD-M427 RFXJ AC110-127V/ 220-240V
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
With the voltage selector

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PD-M427
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 not risk trying to do so and refer the repair to a qualified service technician.
WARNING !
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER OUTPUT IS LESS THAN CLASS 1
BUT THE LASER COMPONENT IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT FOR
CLASS 1.
A SPECIALLY INSTRUCTED PERSON SHOULD DO SERVICING OPERATION OF THE APPARATUS.
LASER DIODE CHARACTERISTICS
FOR DVD : MAXIMUM OUTPUT POWER : 5 mW
WAVELENGTH : 650 nm
FOR CD : MAXIMUM OUTPUT POWER : 7 mW
WAVELENGTH : 780 nm
Additional Laser Caution
* : Refer to page 23. on the service manual RRV2905.
LABEL CHECK
REAR
(DRW2168)
1. Laser Interlock Mechanism
The position of the switch (S651) for detecting loading
state is detected by the system microprocessor, and
the design prevents laser diode oscillation when the switch (S651)
is not on CLMP terminal side (CLMP signal is OFF or high level).
Thus, the interlock will no longer function if the switch (S651)
is deliberatery set to CLMP terminal side. (low level)
The interlock also does not function in the test mode ].
Laser diode oscillation will continue, if pin 33 of
CXA1782CQ (IC151) on the MOTHER BOARD ASSY
is connected to GND, or pin 26 of IC351 (LDON) is connected
to low level (ON), or else the terminals of Q151 are shorted
to each other (fault condition).
2. When the cover is opened, close viewing of the objective lens with
the naked eye will cause exposure to a Class 1 laser beam.

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PD-M427
[ Important symbols for good services ]
In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely.
When you find the procedures bearing any of the symbols, be sure to fulfill them:
2. Adjustments
To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable.
In accordance with the procedures or instructions described in this manual, adjustments should be performed.
3. Cleaning
For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning,
proper cleaning should be performed to restore their performances.
5. Lubricants, glues, and replacement parts
Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.
4. Shipping mode and shipping screws
To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or
the shipping screws should be installed before shipping out in accordance with this manual, if necessary.
1. Product safety
You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and
should keep the safety during servicing by following the safety instructions described in this manual.

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PD-M427
SAFETY INFORMATION ......................................................................................................................................2
1. SPECIFICATIONS .................................................................................................................................................5
2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................... 6
2.1 PACKING SECTION ............................................................................................................................... 6
2.2 EXTERIOR (1/2)SECTION ............................................................................................................................. 8
2.3 EXTERIOR (2/2)SECTION.................................................................................................................................................................................................. 9
2.4 SINGLE MECHANISM SECTION ................................................................................................................... 10
3. SCHEMATIC DIAGRAM .................................................................................................................................................................................. ... 12
3.1 MOTHER, DISPLAY and SW BOARD ASSYS ........................................................................................... 12
3.2 WAVEFORMS MOTHER BOARD ASSY ..................................................................................................... 14
4. PCB CONNECTION DIAGAM ............................................................................................................................ 16
4.1 MECHA, DISPLAY, SW and HP BOARD ASSYS 16
.......................................................................................
4.2 MOTHER BOARD ASSY .................................................................................................................................................................................... 17
6.1 PREPARATIONS .............................................................................................................................................................................................................................................................................. 22
6.2 ADJUSTMENT .............................................................................................................................................................................................................................................................................. 23
5. PCB PARTS LIST ............................................................................................................................................... 19
6. ADJUSTMENT .................................................................................................................................................... 22
7. GENERAL INFORMATION ................................................................................................................................ 30
7.1 DISPLAY .................................................................................................................................................. 30
7.2 CLEANING ............................................................................................................................................ 31
7.3 BLOCK DIAGRAM .................................................................................................................................... 31
8. PANEL FACILITIES ............................................................................................................................................ 32
CONTENTS

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PD-M427
White
Red
Dry cell batteries
(AAA/R03)
Remote control unit
(PWW1149)
(CU-PD104)
Control cable
(PDE-319)
(L= 1 m)
Output cable
(PDE1315)
(L= 1 m)
6-Compact disc magazine
(PXA1617)
• Operating instructions
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STANDBY/ON
DISC 1 DISC 2 DISC 3
DISC 4 DISC 5 DISC 6
78 3
1¡
4¢
RANDOM
HI–LITE
PROGRAM DELETE
CLEARCHECK
MULTI
COMPACT DISC PLAYER
REMOTE CONTROL UNIT
CU-PD104
Accessories
SPECIFICATIONS
General
Type ............................... Compact disc digital audio system
Power requirements
Multi-voltage model ...................... AC 110-127/220-240 V
(Switchable), 50/60Hz
Power consumption
Australian and New Zealand models ........................ 12 W
Operating temperature ...................................... +5°C-+35°C
(+41°F– +95°F)
Weight (without package) ........................ 3.7 kg (8 lb, 3 oz.)
External dimensions ............ 420(W) x 294 (D) x 105 (H) mm
16-9/16 (W) x 11-9/16 (D) x 4-1/8 (H) in
Audio section
Frequency response ...................................... 2 Hz – 20 kHz
Output voltage ............................................................. 2.0 V
Wow and flutter ................................ Limit of measurement
(0.001% W.PEAK) or less (EIAJ)
Channels .................................................. 2-channel (stereo)
Output terminal
Audio line output
Control input/output jacks
Accessories
• Remote control unit ..............................
..............................
.............................. 1
• Size AAA/R03 dry cell batteries ............ 2
• Six-compact-disc magazine............................................. 1
• Control cable ................................................................... 1
• Output cable ................................................................... 1
• Operating instructions .................................................... 1
NOTE:
Specifications and design subject to possible modification
without notice, due to improvements.
The Magazine Type Multi CD Players with mark
and the Magazines with the same mark are compatible
for 5 inch (12 cm) discs.
1. SPECIFICATIONS

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PD-M427
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The 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.
Screws adjacent to mark on product are used for disassembly.
For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
NOTES:
REAR
10
9
5
8
11
4
3
7
6
12
1
2

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PD-M427
• PACKING PARTS LIST
1 Control Cable (for SR) (L=1 m) PDE-319
2 Output Cable (L=1 m) PDE1315
(for AUDIO)
3 Remote Control Unit PWW1149
(CU-PD104)
4 Battery Cover PZN1010
5 6-Compact Disc Magazine PXA1617
6 Operating Instructions PRE1298
(English, Trad-Chinese)
7 Styrol Protector (F) PHA1276
8 Styrol Protector (R) PHA1277
9 CD Packing Case PHG2373
10 Mirror Mat Sheet Z23–007
(750X600X0.5)
NSP 11 Dry Cell Battery (AAA/R03) VEM-022
12 Caution 220V Label ARR1003
(1) PACKING PARTS LIST
Mark No. Description Parts No.

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PD-M427
F
F
1
4
3
20
21
21
24
21
22
22
32
27
29
5
22
7
7
28
7
17
25
25
17
24
2
6
26
8
10
14
19
9
16 18
22
23
30
23
22
22
11
8
6
33
15
12
(Refer to "2.3 MULTI
MECHANISM ASSY".)
34
34
2.2 EXTERIOR

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PD-M427
Mark No. Description Part No. Mark No. Description Part No.
EXTERIOR PARTS LIST
1 Strain Relief CM–22C
2 32P F.F.C/30V PDD1041
3 Power Transformer PTT1238
4 AC Power Cord PDG1075
5 Bonnet PYY1149
6 Foot Assy AEC1531
7 Screw IBZ30P080FCC
8 Rubber Sheet AEB1111
9 Function Panel PNW2913
10 Play Button PAC1766
11 Name Plate PAM1776
12 Power Button PAC1719
13 …………………
14 Track Button PAC1765
15 Display Window PAM1855
16 Spring (Door) PBH1022
NSP 17 Earth Lead Unit DE007VF0
18 Door PNW2598
19 FUNCTION BOARD Assy PWZ2769
20 MOTHER BOARD Assy PNW2155
21 Screw BBZ30P060FMC
22 Screw BBZ30P080FZK
23 Screw PPZ30P120FMC
24 Screw FBT40P080FZK
25 Screw PDZ30P050FMC
NSP 26 Under Base PNA1751
27 Rear Base PNA2597
NSP 28 Multi Mechanism Assy PXA1592
29 Flat Cable (6P) D20PYY0615E
NSP 30 SW BOARD Assy PWZ2805
31 ••••
32 Caution Label DRW2168
NSP 33 Locking Card Spacer AEC7492
34 Binder ZCA-SKB90BK

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47
32
33
76
29
30
39
50
80
68
38
43
83
61
27
64
13
42
21
7
9
2
18
39
59
38
75
63
38
26
25
1
37
40
17
40
5
4
40
16
17
24
71
52 55
3
83
48
86
58
69
23
24
62
22
24
23
24 85
56
49
54 51
87 78
57
70
84
82
79
73 74
53
72
22
19
20
41
14
15
77
38
9
1
38
12 36
67
11 59
∗ 2 Label
8
38
66
38
60 10
35
6
45
44
38
37
5
40
7
31
46
47 28
47
46
47
34
65
∗ 1 Label
Red Mark
Red
Mark
Fix the motor (No.
59) on the gear
holder (No. 2) so that
the label attached on
the motor faces the
direction illustrated.
*2: Fix the motor (No. 59)
on the top guide N (No. 6)
so that the label attached
on the motor faces the
direction illustrated.
2.3 MULTI MECHANISM ASSY

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MULTI MECHANISM ASSY PARTS LIST
Mark No. Description Parts No. Mark No. Description Parts No.
1 Motor Pulley PNW3026
2 Gear Holder PNW1929
3 PU PWB (POLYIMDE) PNP1442
4 Cam Gear PNW1923
5 Belt PEB1138
6 Top Guide N PNW2441
7 Gear Pulley PNW1918
8 Gear S PNW1919
9 Gear L PNW1920
10 Eject Spring PBH1107
11 SW Lever PNW1927
12 Seven Bar PNW1931
13 Sub Revolving Lever PNW1933
14 Sub Revolving Lever Spring PBH1111
15 Revolving Lever PNW1932
16 Drive Plate PNW1930
17 Motor Screw PBA–112
18 Holder Lever Spring PBH1110
19 Disc Holder PNW1924
20 Cushion A PED1001
21 Holder Lever PNW1925
22 Float Rubber PEB1014
23 Float Rubber PEB1132
24 Float Screw PBA1073
25 Release Lever PNW1934
26 Release Spring PBH1106
27 Clamper Cam PNW1922
28 Clamper Holder PNW1921
29 Centering Spring PBH1109
30 Clamper PNW2774
31 Lock Lever PNW1917
32 Lock Spring PBH1108
33 Stair NL PNW2443
34 Stair NR PNW2444
35 Synchronize Lever PNW1926
36 Motor Assy PEA1130
(LOADING, DISC SELECT)
37 Screw PMZ26P040FMC
38 Screw PPZ30P080FMC
39 Screw BBZ30P060FMC
40 Washer WT26D047D025
41 Washer WA31D054D025
42 E Ring Z39–010
43 Screw IPZ30P080FMC
44 Spacer (Rubber) PEB1238
45 Spacer (Rubber) PEB1179
46 Silent Ring PBK1093
47 Washer WA62D130D025
48 Rack Spring PBH1128
49 Guide Bar PLA1094
50 Disc Table PNW1067
51 Gear 1 PNW2052
52 Gear 2 PNW2053
53 Gear 3 PNW2054
54 Pinion Gear PNW2055
55 FFC Holder M PNW2746
56 Carriage Base PNW2699
57 D.C. Motor Assy PEA1235
(Spindle with oil)
58 Pickup Assy PEA1335
59 Carriage Motor VXM1033
60 Eject Lever PNB1644
61 Upper Chassis PNB1642
NSP 62 Servo Mechanism Assy M PXA1595
NSP 63 LOADING BOARD Assy PWZ2038
64 Sub Chassis N PNW2440
65 Main Chassis PNW2074
NSP 66 SELECT BOARD Assy PWZ2533
NSP 67 MOTOR BOARD Assy PWZ2040
68 Disc Table Assy PEA1035
69 Screw BBZ26P060FMC
70 Screw BPZ20P060FMC
71 Screw BPZ26P100FMC
72 Screw JFZ17P025FZK
73 Screw JFZ20P040FMC
74 Washer WT12D032D025
75 Connector Assy PDE1241
76 Stopper Spring PBH1131
77 Stopper PNW2069
78 D.C. Motor Assy (CARRIAGE) PEA1246
NSP 79 MECHANISM BOARD Assy PWX1279
80 Clamp Magnet PMF1014
81 …………………
82 Connector Assy PDE1240
NSP 83 Earth Lead Unit PDF1118
84 Gear Stopper PNB1303
85 Yoke M PNB1312
86 Rack Holder PNW2056
87 Carriage DC Motor PXM1027
Spacer
Spacer
FFC Holder M (Pressure of about 9 kg)
Disc Table
1.2mm
6.9mm
0.9mm
±0.05mm
Yoke M
Spindle Motor
Carriage Base
Stopper
Spacer Setting
Position
2
1
1Use nipper or other tool to cut the three sections marked
Ain figure 1. Then remove the spacer
2While supporting the spindle motor shaft with the
stopper, put spacer on top of the yoke M, and stick the
disc table on top (takes about 9kg pressure). Detach the
spacer.
¶How to Install the Disc Table
A
A

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PD-M427
53
18
19
16
33
223
3
4
7
5
6
8
23
-0.7V
1.8V
1.8V
0V
1.6V
1.6V
0V
1.6V
1.6V
0.2V
1.7V
1.7V
0V
0V
0V
0V
0V
5.0V
3.4V
5.0V
SW BOARD ASSY PWZ2805:WPWXJ and RDXJ TYPES
S801
FUNCTION BOARD ASSY
( PWZ2769 )
C
D
B
G
PICK UP ASSY
PEA1335
SERVO MECHANISM ASSY M
(PXA1595)
MULTI MECHANISM ASSY (PXA1592)
D801
SIGNAL ROUTE
: AUDIO SIGNAL
: AUDIO SIGNAL(WY,WPW)
: AUDIO SIGNAL(KU,KC,RD)
: FOCUS SERVO LOOP
: TRACKING SERVO LOOP
: CARRIAGE SERVO LOOP
: SPINDLE DRIVE
: LOADING DRIVE
SPINDLE
MOTOR
ASSY
PEA1235
CARRIAGE
MOTOR
ASSY
PEA1246
VXM1033
VXM1033
4
C301
R362
CN602
D20PYY0615E
R363 R364 R365 10K
10K 10K 10K
MZS1
MZS2
DCH
DCNT
DSEL
M
CN204
DISC SELECT
SELECT BOARD ASSY
(PWZ2533)
LOADING BOARD
ASSY (PWZ2038)
MECHANISM
BOARD ASSY
(PWX1192)
MOTOR
BOARD
ASSY
(PWZ2040)
LPS1 LPS2
CLAMP
LOADING
HOME
EJECT
MAGAZINE MZS1 MZS2
OUT
MULTI
SINGLE
DCNT DCNM
2-6DISC
HOME
SELECTING
IN
L
L
L
L
L
LL
L
L
L
H
HH
H
H
H
H
H
H
PDD1041
S603:PSG1010
S604-S606:DSG1016
52147-0610
52151-0610
S601,S602:DSG1016
CN601
4-173979-4
4-173981-4
Holder PNB1285
DSDW
DSUP
CN610
VCP1164
VCP1158
VCP1158
VCP1156
VCP1156
VCP1158
A B C D E F G
MOTHER BOARD ASSY
A
PWM2155
3. SCHEMATIC DIAGRAM
3.1 MOTHER BOARD ASSY, DISPLAY BOARD ASSY and SW BOARD ASSY

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PD-M427
1.6V
1.6V 0V
0V
-9.2V
0V
-9.2V
0V
1.6V
1.6V
0V
AC POWER CORD
PDG1075 :
AC110-127V/220-240V
50/60Hz
POWER
TRANSFORMER
PTT1238
MTZJ5.1
FUNCTION BOARD ASSY
S701 : EJECT
S702 : REPEAT
S703 : PGM
S704 : DISC
S705 : TRACK
/MANUAL SEARCH REV
S706 : TRACK
/MANUAL SEARCH FWD
S707 : STOP
S709 : RANDOM
S710 : HI-LITESCAN
SW BOARD ASSY
S801 : POWER STANDBY/ON
1SS254
10
10
MZSI
MZS2
DCHM
LPS2
DCNT
DSUP
DSDW
LPS1
NJM4558D-D
NJM4558D-D
22/25
22/25
PIN No.
Volta-
ge(V)
PLAY
PLAY:1DISC PLAY.
STOP
5.0
5.0
-23.2
-23.8
12345
-23.2 -23.2 -23.2
-23.7 -23.7 -23.8
678 9
-23.2
-23.8
-23.2
-23.8
-23.2
-23.8
-23.2
-23.8
10 11 12 13 14
-23.2
-23.8
-23.2
-23.8
4.9
0.2
15 16 17 18 19
-0.1
-0.1
-25.9
-26.4
-5.2
-5.2
20
PIN No.
Volta-
ge(V)
PLAY
STOP
21 22 23 24 25 26 27 28 29
4.9
4.9
-22.8 -26.4
30 31 32 33 34
4.9
4.8
4.0
2.5
35 36 37 38 39
4.9
4.9 0.0
0.0
40
4.8
4.9 2.9
4.0
2.3
0.0
0.0
0.0
0.0 0.0
0.0
PIN No.
Volta-
ge(V)
PLAY
STOP
41 42 43 44 45 46 47 48 49
0.0
0.0
50 51 52 53 54
4.9
4.9
55 56 57 58 59
4.9
4.9
0.1
0.1
60
4.9
4.9 4.9
2.3
2.3
2.2
2.2
0.1
0.1
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
5.0
5.0
0.0
0.0
5.0
0.0
4.9
0.0
4.9
61 62 63 64
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
IC351(PD4836A)
-16.8
-17.0
-16.7-16.7
-22.2
-23.0
-22.9
-22.5 -19.8
-23.2
-13.5
-10.5
-0.4
-0.37
-0.43
-0.44
-19.0 -20.0 -13.5
-10.5
-13.3
-10.4
0.9
0.0
100k
100k
100k
100k
47k
47k
A
: The power supply is shown with the marked box.
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST"

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TP1-Pin 1: PLAY MODE (RF)
500mV/div 500nsec/div
IC202-Pin 9: PLAY MODE (CADR)
0.2V/div 2sec/div
2
25
57
7
8
6
4
3
6'4'
TP1-Pin 1: TRACK SEARCH MODE
(RF)
500 mV/div 200 µsec/div
TP1-Pin 6: PLAY MODE (FOER)
100mV/div 10msec/div
TP1-Pin 2: PLAY MODE (TRER)
200mV/div 1msec/div
TP1-Pin 2: 50T - JUMP (*1) MODE
(TRER)
200mV/div 1msec/div
IC202-Pin 4: FOCUS-IN (*2) MODE
(FODR)
1V/div 200msec/div
IC202-Pin 4: PLAY MODE (FODR)
1V/div 1msec/div
IC202-Pin 3: PLAY MODE (TRDR)
500mV/div 1msec/div
IC202-Pin 3: 50T - JUMP (*1) MODE
(TRDR)
500mV/div 1msec/div
IC201-Pin 9: PLAY MODE (SPDR)
1V/div 50msec/div
IC201-Pin 9: TRACK SEARCH MODE
(SPDR)
2V/div 50msec/div
–VC –VC
–VC
–VC
–VC –GND
–GND
–GND
–GND
–GND
–GND
–GND
B
Waveforms (Mother Board Assy)
Note: The encircled numbers denote measuring point in the schematic diagram.
*1 50T-JUMP: After switching to the pause mode, press
the manual search key.
*2 FOCUS-IN: Press the play key without loading a disc.
3.2 WAVEFORMS

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PD-M427
IC301-Pin 38 : PLAY MODE
(PCO)
2V/div 10 µsec/div
53
33
19
23
10
18
16
8
IC202-Pin 9: TRACK SEARCH MODE
(CADR)
2V/div 200msec/div
IC301-Pin 86 : PLAY MODE (1kHz)
(LOUT 1)
1V/div 200msec/div
IC301-Pin 54 : PLAY MODE (1kHz)
(BCK)
2V/div 500nsec/div
IC301-Pin 50 : PLAY MODE (1kHz)
(LRCK)
2V/div 10 µsec/div
IC301-Pin 52 : PLAY MODE (1kHz)
(PCMD)
2V/div 500nsec/div
TRACK SEARCH MODE
Upper : TP1-Pin 1 (RF) 1V/div
Lower : IC151-Pin 23 (C.OUT)
2V/div 50 µsec/div
IC301-Pin 27 : PLAY MODE (MDP)
2V/div 2 µsec/div
–GND
–GND
–GND
–GND
–GND
–GND
–GND–GND
–GND

16
1234
1234
C
D
F
A
B
E
PD-M427
4. PCB CONNECTION DIAGRAM
SPINDLE
MOTOR INSIDE
CARRIAGE
MOTOR
M
M
G
MECHANISM BOARD ASSY
MULTI MECHANISM ASSY (PXA1592)
SERVO MECHANISM ASSY M (PXA1595)
PICKUP ASSY
(PEA1335)
CN102
B
LOADING BOARD ASSY
C
SELECT BOARD ASSY
D
MOTOR BOARD ASSY
A
CN202
A
CN131
A
CN203
A
CN204
PNP1331-A
CB D G
SIDE A
4.1 LOADING BOARD ASSY, SELECT BOARD ASSY, MOTOR BOARD ASSY
and MECHANISM BOARD ASSY

17
1234
1234
C
D
F
A
B
E
PD-M427
E
FUNCTION BOARD ASSY
F
SW BOARD ASSY
ACN351
PNP1366-A
NOTE FOR PCB DIAGRAMS :
1. Part numbers in PCB diagrams match those in the schematic
diagrams.
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
3. The parts mounted on this PCB include all necessary parts for
several destinations.
For further information for respective destinations, be sure to
check with the schematic diagram.
4. View point of PCB diagrams.
Symbol In PCB
Diagrams
Symbol In Schematic
Diagrams Part Name
BCE
D
D
G
G
S
S
BCE
BCE
DGS
BCEBCE
BCE
Transistor
Transistor
with resistor
Field effect
transistor
Resistor array
3-terminal
regulator
Capacitor
Connector
P.C.Board Chip Part
SIDE A
SIDE B
FE
SIDE A
4.2 FUNCTION BOARD ASSY and SW BOARD ASSY

18
1234
1234
C
D
F
A
B
E
PD-M427
A
MOTHER BOARD ASSY
PNP1424–B
G
CN610
AC POWER CORDTo PICKUP ASSY
D
CN602
B
CN601
ECN701
VR151
VR152
Q391
Q452
Q454
Q404
Q403
Q453
Q451
Q405
IC406
IC405
IC31
IC401
IC34
Q341
Q151
Q152
Q201
IC202
IC21
Q321
VR153
VR154
VR155
VR156
SIDE A
A
4.3 MOTHER BOARD ASSY

19
5678
5678
C
D
F
A
B
E
PD-M427
AMOTHER BOARD ASSY
PNP1424–B
IC301
IC151
IC351
SIDE B
A

20
1234
1234
C
D
F
A
B
E
PD-M427
5. PCB PARTS LIST
Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
The 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.
When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
561
473
R50
1R0
5621
NOTES:
560
47k
0.5
1
RD1/4PU J
RD1/4PU J
RN2H K
RS1P K
56 x 10
1
47 x10
3
R50
1R0
561
473
5.62k RN1/4PC F562 x 10
1
5621
MOTHER BOARD ASSY PWM2155
NSP SUB BOARD ASSY PWX1337
FUNCTION BOADR ASSY PWZ2769
NSP SW BOARD ASSY PWZ2805
NSP MULTI MECHANISM ASSY PXA1592
NSP MECHA BOARD ASSY PWX1279
NSP LOADING BOARD ASSY PWZ2038
NSP MOTOR BOARD ASSY PWZ2040
NSP SELECT BOARD ASSY PWZ2533
NSP SERVO MECHANISM ASSY M PXA1595
NSP MECHANISM BOARD ASSY PWX1192
LIST OF WHOLE PCB ASSEMBLIES
Mark Symbol and Description Part No.
PD-M427/RFXJ Remarks
Mark No. Description Parts No. Mark No. Description Parts No.
7PARTS LIST FOR PD-M427/RFXJ
MOTHER BOARD ASSY
SEMICONDUCTORS
IC151 CXA1782CQ
IC301 CXD2519Q
IC31, IC34 ICP–N10
IC201, IC202 LA6520
IC405 NJM4558D–D
IC351 PD4836A
IC21 PQ05RR12
Q151 2SA854S
Q403, Q404 2SD2144S
Q152 DTA124ES
Q341 2SK246
Q405 DTC124ES
D352, D341, D391- D394 1SS254
D54 MTZJ18B
D359 MTZJ5.1B
D218 MTZJ6.2B
D11–D14, D52 S5688G
COILS AND FILTERS
L351 AXIAL INDUCTOR LAU100J
L391 INDUCTOR LAU1R0J
CAPACITORS
C181 CCCCH100D50
C341, C342 CCCCH120J50
C383 CCCSL181J50
C393 CCCSL101J50
A