DOWNLOAD Sony HCD-EC68 / HCD-EC78 / MHC-EC68 / MHC-EC78 Service Manual ↓ Size: 3.41 MB | Pages: 62 in PDF or view online for FREE

Model
HCD-EC68 HCD-EC78 MHC-EC68 MHC-EC78
Pages
62
Size
3.41 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-ec68-hcd-ec78-mhc-ec68-mhc-ec78.pdf
Date

Sony HCD-EC68 / HCD-EC78 / MHC-EC68 / MHC-EC78 Service Manual ▷ View online

HCD-EC68/EC78
HCD-EC68/EC78
29
29
DECK
BOARD
K
PANEL
BOARD
CN304
L
CD
BOARD
CN201
M
MAIN
1
BOARD
(1/2)
21
IC B/D
IC B/D
2.9
1.2
1.4
0
2.9
0
2.2
0
1.7
0
2.3
1.6
2.3
1.8
0
1.8
3.6
3
3.7
2.2
4.2
2.2
4.8
4.8
4.7
4.8
4.7
4.7
2.4
2.2
0.9
2.2
AM FREQUENCY
FM TRACKING
COVERAGE
COVERAGE
FM FREQUENCY
AM TRACKING
FM DETECTOR
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
7.4
3.3
3.3
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
0
8.8
2.9
4.8
6.9
3.4
5.5
0
0.7
0.7
3.8
3.8
0
3.2
7.2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
21P
CN608
AVDD (3.3V)
R-OUT
DACGND
L-OUT
AGND
RST
BUS0
BUS1
BUS2
BUS3
BUCK
CCE
REQ
SBSY
DGND
D-OUT
DVDD (3.3V)
VM (7V)
MGND
CD DRIVE MUTE
ZDET/LRCKIN
1N4002B
D619
1N4002B
D620
10V
220
C669
100
R722
1k
R716
2SC3052F-T1-LF
Q622
22k
R720
10V
470
C673
16V
100
C667
100
R715
50V
1
C663
50V
1
C664
220
R707
220
R706
50V
10
C661
50V
1
C676
50V
1
C675
1
C658
1
C656
C654
1
C652
1
1
C650
1
C648
C651
220p
2200p
C647
1k
R697
C653
220p
2200p
C657
1k
R709
C635
0.1
C643
0.1
2SC3052
Q617
2SC3052
Q616
R679
4.7k
R680
4.7k
R682
10k
R694
10k
50V
1
C644
50V
1
C636
50V
1
C646
50V
1
C665
TP637
TP639
TP641
TP642
TP643
TP644
TP645
TP646
TP647
TP648
TP649
TP651
TP652
TP654
TP656
TP657
TP658
TP659
TP660
TP661
TP662
TP663
TP664
TP665
TP666
TP667
TP668
TP669
TP670
TP672
TP673
TP674
TP676
TP677
TP679
TP680
4.7k
R700
4.7k
R704
10k
R696
10k
R708
C649
220p
1
2
3
4
5
6
7
8
9
9P
CN606
9V
PB-Lch
PB-Rch
A-GND
REC-Lch
REC-Rch
M-GND
9V
I-TP-STATE
0.1
C679
0.1
C691
0.1
C693
0.1
C694
2200p
C683
2200p
C690
470p
C689
0.01
C692
2200p
C680
2200p
C682
2200p
C681
100
R732
100
R731
MAZ8039GHLS0
D618
0.047
C638
0.047
C637
0.047
C634
0.047
C633
22k
R684
22k
R681
0.022
C674
5.6k
R751
5.6k
R753
R701
0
R702
0
4.7k
R749
4.7k
R750
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
27P
CN607
16V
C671
100
C838
1000p
C827 0.047
C820
5p
C816
0.01
22
R804
TP688
R841
10k
10V
220
C833
R809
100
R824
470
R831 2.2k
R810
4.7k
C822
22
50V
TP684
R811
100k
R823
10k
JW802
R844
2.2k
R845
0
R838
22k
22
R808
R830
3.3k
C815
4700p
R802
22
C837
10p
C824
1
C845
0.22
R819 33k
C817
0.01
R837
100k
C803
1
C847
0.1
R816 1k
C835 0.047
R829 4.7k
6
2
1
3
4
AM IF
T801
R820
4.7k
31
32
33
34
35
36
1
2
3
4
5
6
30
29
28
27
26
8
7
9
10
11
21
22
23
24
25
12
13
14
15
20
19
16
17
18
LV23003VA
IC801
AM RF-IN
REG
FM-MIX
GND1
AM-MIX
VCC1
AM IF-IN
FM IF-IN
P-DET
P-COMP
FM-DET
L-OUT
R-OUT
VSS
CE
DI
CL
DO
XIN
XOUT
VDD
MPX-IN
FM DET
-OUT
AM DET
-OU
AGC
PD
LP-IN
LP-OUT
BO1
BO2
AM-OSC
FM-OSC
VCC2
FM RF-OUT
GND
FM RF-IN
R827 100k
R840
0
C819
470p
R812
47k
R821
4.7k
C841
1000p
C823
220
10V
R805
470k
16V
100
C802
C830
2p
TP687
1
6
2
3
4
5
L805
C831
0.47
R813
470k
CF
G
I
O
FL801
TP690
1
2
3
4
6
L801
C814
4700p
L803
C832
0.47
R842
0
TP686
L804
C848
0.1
R817
47k
R826
1k
R836
6.8k
C844
0.1
SV230-TB-E
D804
C808
18p
C828
100p
2SC3052F-T1-LF
Q801
R814
22k
R807
22k
R815
10k
R806
47k
R825
4.7k
R832 1M
C840
0.1
JW801
C826
1000p
BPF
G
I
O
FL803
C829 0.47
R839
10
C804
18p
CF801
C806
470p
R846
10
1
3
4
6
2
L802
TP689
TP683
TP685
C836 0.022
R818 10k
R843
100k
JW804
C805
0.47
SV230-TB-E
D803
2SC3052F-T1-LF
Q802
C846
0.01
C843
0.1
R801
100
C807
1
R803
2.2k
JW803
C821
2200p
C834
10p
R822
100
R847
0
1
2
3
3P
CN801
AM
GND
FM
X801 75MHz
SVC347A-TL-E
D801
R660 0
68
R717
68
R718
68
R719
KTC3203Y-AT
Q624
C645
1000p
C655
220p
C666
1000p
10p
C659
10p
C660
R683
2.7k
R695
2.7k
1000p
C662
0.1
C850
470p
C713
C809
1000p
C810
1000p
C81
1
1000p
28
27
26
25
24
23
22
7
6
5
4
3
2
1
21
20
16
17
18
19
13
12
11
10
8
9
15
14
BD3499FV-E2
IC602
TC/DMP-R
TC/DMP-L
TUNER-R
TUNER-L
CD-R
CD-L
AUDIO-R
AUDIO-L
SEL-L
SEL-R
VOL-R
VOL-L
TRE-L
TRE-R
BASSB-L
BASSA-L
BASSA-R
BASSB-R
OUT
-L
SB-L
SURR
SB-R
OUT
-R
VCC
SCLK
SDA
TA
GND
FIL
2200p
C640
2200p
C639
R788
15k
R787 15k
470p
C704
0.068
C684
0.068
C686
0.068
C685
0.068
C687
5.6k
R752
5.6k
R754
2200p
C703
0.015
C789
0.015
C788
1PS226-115
D802
1PS226-115
D805
1PS226-115
D806
CD-R
CD-L
AUDIO-L
AUDIO-R
CD-R
CD-L
TU-DO
TUNER-R
TUNER-L
I/O-BUS2
I/O-BUS0
TUNER-R
PB-L
PB-R
REC-L
REC-R
O-CD-M-MUTE
O-CD-BUCK
TU-CE
TU-CLK
TU-ANSD
TU-DO
I2C-DATA
I2C-CLK
5V-ON/TP-REC-MUTE
O-POWER
O-CD-M-MUTE
AMP-ON
O-CD-SBSY
O-CD-REQ
O-CD-CCE
O-CD-BUCK
I/O-BUS2
I/O-BUS0
I-P-MONI
O-CD-ON
TU-ANSD
PB-L
DMP-DET/USB-RST
TU-DI
O-CD-SBSY
O-CD-CCE
I/O-BUS3
I/O-BUS1
O-CD-RST
O-CD-RST
I/O-BUS1
I/O-BUS3
O-CD-REQ
REC-R
REC-L
DMP-DET/USB-RST
TU-CE
TU-DI
TU-CLK
5V
-ON/TP-REC-MUTE
O-CD-ON
I2
C
-D
ATA
I2C-CLK
AMP-R
AMP-L
TUNER-L
PB-R
CD-A
VR
USB5V
-ON
VSTBY
1
3
2
MAIN BOARD (2/2)
I/O-I2C-DATA
I-TU-DO
I-TU-ANSD
O-TU-CLK
O-TU-DI
O-TU-CE
V-STBY
D-GND
O-CD-ON
I-P-MONI
O-CD-RST
I/O-BUS3
O-CD-BUCK
I/O-BUS0
O-CD-CCE
I/O-BUS1
O-CD-REQ
O-CD-SBSY
I/O-BUS2
O-AMP-ON
M-GND
O-CD-M-MUTE
I-DMP-DET/O-USB-RST
O-POWER
5V-ON/TP-REC-MUTE
I/O-I2C-CLK
O-SW-ON/I-TP-STATE
Q616, 617
MUTING
INPUT SELECTOR,
IC602
ELECTRICAL VOLUME
AM/FM-DET, OSC,
IC801
MIX, PLL, IF AMP
Q622, 624
+3.3V
REGULATOR
ANTENNA
FM/AM
(EXCEPT EC68: UK)
+3V REGULATOR
+5V REGULATOR
(EC68: UK)
(EXCEPT EC68: UK)
(EXCEPT EC68: UK)
7
11
D
B
6
9
10
F
5
15
L
K
3
G
1
12
C
E
H
8
J
4
13
A
14
2
I
7-7.  SCHEMATIC  DIAGRAM  - MAIN Board (2/2) -
(Page 33)
(Page 28)
• See page 37 for waveforms.   • See page 38 for IC Block Diagrams.
(Page 
26)
(Page 25)
HCD-EC68/EC78
HCD-EC68/EC78
30
30
(1/2)
MAIN
E
CN632
BOARD
MAIN
BOARD
F
CN602
(1/2)
0
0
2
0
0
35.2
0
0
0
0
36.7
-36.8
-35.2
0
0
0
0
0
0
C166
4700p
50V
C151
1
50V
C152
1
R175 220
R177 220
R178 220
R176 220
2W
R179
0.22
2W
R180
0.22
R185
2.2k
R186
2.2k
2SA2026
Q151
2SA2026
Q152
MC2838-T112-1
D151
1
9
8
7
6
5
4
3
2
15
14
13
12
11
10
STK433-070
IC151
-PRE
-VCC
+VCC
LO+
LO-
RO+
RO-
+PRE
SUB
GND
LI+
LI-
ST
-BY
RI-
RI+
C156 100p
C155
100p
C159
3p
C160
3p
C170
C169
R173
1k
R164
47k
R163
47k
R155
47k
R156
47k
R151
1.8k
R152 1.8k
C153
470p
C154
470p
C178
0.1
R159
1k
R160
1k
C161
0.01
C162
0.01
0.1
C174
0.1
C173
R172
100
R181
1.2k
R182
1.2k
R183
22k
R184
22k
TP151
TP152
TP153
TP154
TP155
TP156
TP157
TP158
TP159
TP160
R162 470
R161 470
1
2
3
4
5
5P
CN152
PROTECT
AMP-ON
IN-L
A-GND
IN-R
MA2J1110GLS0
D152
1
2
3
4
5
6
6P
CN151
PA-GND
OUT-R
+VH
NC
-VH
OUT-L
50V
C158 1
50V
C157 1
0
R171
470
R196
470
R195
C175
0.1
C176
0.1
R153
22k
R154
22k
OVER LOAD DETECT
Q151,152
HI AMP BOARD
IC151
POWER AMP
∗C169, 170
100 50V (EC78: E2, E3, E51, MX, AR)
100 63V (EC78: AEP, RU)
7
D
B
6
9
5
3
1
C
8
4
A
2
B
E
B E
Q151
Q152
R151
R152
R153
R154
R155
R156
R159
R160
R161
R162
R163
R164
R171
R172
R173
R175
R176
R177
R178
R181
R182
R183
R184
R185 R186
C153
C154
C155
C156
R195
C159
R196
C160
C161
C162
C166
C173
C174
C175
C176
C178
D151
D152
JR151
1
15
1
6
4 5
1
2
CN151
CN152
R179
R180
C151
C152
C157
C158
C169
C170
JW151
JW152
JW153
JW154
JW155
JW156
JW157
IC151
E
MAIN
BOARD
CN632
F
MAIN
BOARD
CN602
1-875-496-
12, 13
(12, 13)
HI AMP BOARD
A
B
1
2
3
4
7-8.  PRINTED  WIRING  BOARD  - HI AMP Board (EC78) -
(Page 27)
• 
 : Uses unleaded solder.
• See page 23 for Circuit Boards Location.
7-9.  SCHEMATIC  DIAGRAM  - HI AMP Board (EC78) -
(Page 28)
(Page 28)
(Page 27)
HCD-EC68/EC78
HCD-EC68/EC78
31
31
B
E
B
E
Q101
Q102
R101
R102
R103
R104
R105
R106
R107
R108
R109
R110
R111
R112
R113
R114
R122
R123
R125
R126
R127
R128
R131
R132
R133
R134
R135 R136
C103
C104
C105
R142
C106
R145
C109
R146
C110
C116
C123
C124
C125
C126
C128
D101
D103
JR132
1
15
4 5
1
2
1
5
CN102
CN104
R129
R130
C101
C102
C107
C108
C119
C120
JW131
JW132
JW133
JW134
JW135
JW136
JW137
LOW AMP BOARD  
IC101
G
H
MAIN
BOARD
CN603
MAIN
BOARD
CN633
1-875-495-
12, 13
(12, 13)
A
B
1
2
3
4
7-10.  PRINTED  WIRING  BOARD  - LOW AMP Board -
• 
 : Uses unleaded solder.
• See page 23 for Circuit Boards Location.
(Page 27)
(Page 27)
G
CN633
BOARD
(1/2)
MAIN
MAIN
(1/2)
CN603
BOARD
H
0
-36.8
0
0
-35.2
0
0
0
36.7
0
0
35.2
2
0
0
0
0
0
0
C116
4700p
50V
1
C101
50V
1
C102
220
R125
220
R127
220
R128
220
R126
2W
0.22
R129
2W
0.22
R130
2.2k
R135
2.2k
R136
2SA2026
Q101
2SA2026
Q102
MC2838-T112-1
D101
C106 100p
C105
100p
3p
C109
3p
C1
10
C120
C1
19 ∗
1k
R123
47k
R1
14
47k
R1
13
47k
R107
47k
R108
25V
47
C108
25V
47
C107
R103
R104
R105
R106
470p
C103
470p
C104
0.1
C128
1k
R109
1k
R1
10
0.1
C124
0.1
C123
0
R101
0
R102
22k
R133
22k
R134
1.2k
R132
1.2k
R131
R122
100
1
2
3
4
5
5P
CN104
PA-GND
OUT-R
+VH
-VH
OUT-L
TP101
TP102
TP103
TP104
TP105
TP107
TP108
TP109
TP110
TP111
470
R1
12
470
R
111
1
2
3
4
5
5P
CN102
PROTECT
AMP-ON
IN-L
A-GND
IN-R
MA2J1110GLS0
D103
0
R142
1
9
8
7
6
5
4
3
2
15
14
13
12
11
10
STK433-070 (EC78)
IC101
STK433-060 (EC68)
470
R145
470
R146
C126
0.1
C125
0.1
LOW AMP BOARD
IC101
POWER AMP
-PRE
-VCC
+VCC
LO+
LO-
RO+
RO-
+PRE
SUB
GND
LI-
LI+
ST
-BY
RI-
RI+
Q101,102
OVER LOAD DETECT
100 63V
100 50V
∗C119, 120
(EC68/EC78: E2, E3, E51, MX, AR)
(EC78: AEP, RU)
∗R103, 104
1.8k (EC78)
3.3k (EC68)
∗R105, 106
4.7k (EC68)
22k (EC78)
B
A
D
C
7
6
9
5
3
1
8
4
2
7-11.  SCHEMATIC  DIAGRAM  - LOW AMP Board -
(Page 28)
(Page 28)
HCD-EC68/EC78
HCD-EC68/EC78
32
32
1
100
30
31
81
80
50
51
B E
B E
B E
B E
B E
B E
B
E
B E
B E
B E
B
E
B
E
B
E
B
E
B
E
B
E
R400
R401
R402
R405
R406
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R425
R426
R428
R446
R447
Q301
Q303
Q304
Q305
Q306
Q307
Q308
Q310
Q311
Q312
Q313
Q314
Q315
Q316
Q317
Q318
FB301
R301
(EC68:UK)
R302
R303
R304
R305
R306
R307
R308
R309
R310
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
C301
R340
C304
R341
R342
R343
R344
C308
R345
R346
R347
R348
R349
C310
C311
C312
C313
R350
C314
R351
C315
R352
C316
R353
C317
R354
R355
C319
R356
R357
R358
R359
C320
C321
R360
R361
R362
R363
R364
C328
R365
R366
R367
R368
R369
C330
C332
R370
R371
R372
R373
R374
C338
R375
R376
R377
R378
R379
C340
C341
C342
R380
C344
R381
C345
R382
C346
R383
R384
R385
R386
R387
R389
C354
R390
C355
R391
C356
R392
R396
D301
D302
D303
D304
D305
JR301
JR302
JR303
JR304
JR305
JR307
JR308
JR309
JR310
JR311
JR313
JR315
SCR1
B
E
E
B
1
37
11
2
27
26
1
2
12
13
3
2
1
11
2
1
2
JW370
JW371
JW372
JW373
JW374
JW375
JW376
JW377
JW378
JW379
JW380
JW381
JW382
JW383
JW384
JW385
JW386
JW387
JW388
JW389
JW390
JW391
JW392
JW393
JW394
JW395
JW396
JW397
JW398
JW399
JW400
JW401
JW402
JW403
JW404
JW405
JW406
Q302
Q309
LED301
SW303
SW303
SW304
SW305
TUNING  +
W301
3
1
SW311
SW312
SW313
SW314
SW315
SW316
SW317
SW318
SW319
CN304
CN302
CN303
CN306
C302
C303
C305
C306
C309
X301
X302
S301
C343
JW301
JW302
JW303
JW304
JW305
JW306
JW307
JW308
JW309
JW310
JW311
JW312
JW313
JW314
JW315
JW316
JW317
JW318
JW319
JW320
JW321
JW322
JW323
JW324
JW325
JW326
JW328
JW329
JW330
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW339
JW340
JW341
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW351
JW352
JW353
JW354
JW355
JW356
JW357
JW358
JW359
JW360
JW361
JW362
JW363
JW364
JW365
JW366
JW367
JW368
JW369
PANEL BOARD  
IC301
IC302
+
DSGX
.-
PLAY MODE/
TUNING MODE
FUNCTION
VOLUME
ROTARY
ENCODER
DISPLAY
EQ
-TUNING
/
CD
SW311
EC68:RU,E2,E3,E51,MX,AR,AUS/
EC78:RU,E2,E3,E51,MX,AR
LCD301
LIQDID CRYSTAL DISPLAY
9
Y
.-
L1
MAIN
BOARD
CN607
B1
KEY
POWER
BOARD
W401
STANDBY
1-875-490-
12
(12)
A1
KEY CD
BOARD
CD MECHANISM
DECK
A
B
C
D
E
F
G
1
2
3
4
5
6
(CHASSIS)
7-12.  PRINTED  WIRING  BOARD  - PANEL Board (Suffi x-12) -
(Page 34)
• 
 : Uses unleaded solder.
• See page 23 for Circuit Boards Location.
(Page 27)
(Page 34)
7-13.  PRINTED  WIRING  BOARD  - PANEL Board (Suffi x-13) -
• 
 : Uses unleaded solder.
• See page 23 for Circuit Boards Location.
1
100
30
31
81
80
50
51
B E
B E
B E
B E
B E
B E
B
E
B E
B
E
B E
B
E
B
E
B
E
B
E
B
E
B
E
R400
R401
R402
R405
R406
R412
R413
R414
R415
R416
R417
R418
R419
R420
R421
R422
R425
R426
R428
R446
R447
Q301
Q303
Q304
Q305
Q306
Q307
Q308
Q310
Q311
Q312
Q313
Q314
Q315
Q316
Q317
Q318
FB301
R301
(EC68:UK)
R302
R303
R304
R305
R306
R307
R308
R309
R310
R312
R313
R314
R315
R316
R317
R318
R319
R320
R321
R322
R323
R324
R325
R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
C301
R340
C304
R341
R342
R343
R344
C308
R345
R346
R347
R348
R349
C310
C311
C312
C313
R350
C314
R351
C315
R352
C316
R353
C317
R354
R355
C319
R356
R357
R358
R359
C320
C321
R360
R361
R362
R363
R364
C328
R365
R366
R367
R368
R369
C330
C332
R370
R371
R372
R373
R374
C338
R375
R376
R377
R378
R379
C340
C341
C342
R380
C344
R381
C345
R382
C346
R383
R384
R385
R386
R387
R389
C354
R390
C355
R391
C356
R392
R396
D301
D302
D303
D304
D305
JR301
JR302
JR303
JR304
JR305
JR307
JR308
JR309
JR310
JR311
JR313
JR315
SCR1
B
E
E
B
1
37
11
2
27
26
1
2
12
13
3
2
1
11
2
1
2
JW370
JW371
JW372
JW373
JW374
JW375
JW376
JW377
JW378
JW379
JW380
JW381
JW382
JW383
JW384
JW385
JW386
JW387
JW388
JW389
JW390
JW391
JW392
JW393
JW394
JW395
JW396
JW398
JW397
JW399
JW400
JW401
JW402
JW403
JW404
JW405
JW406
Q302
Q309
LED301
SW303
SW303
SW304
SW305
TUNING  +
W301
3
1
SW311
SW312
SW313
SW314
SW315
SW316
SW317
SW318
SW319
CN304
CN302
CN303
CN306
C302
C303
C305
C306
C309
X301
X302
S301
C343
JW301
JW302
JW303
JW304
JW305
JW306
JW307
JW308
JW309
JW310
JW311
JW312
JW313
JW314
JW315
JW316
JW317
JW318
JW319
JW320
JW321
JW322
JW323
JW324
JW325
JW326
JW328
JW329
JW330
JW331
JW332
JW333
JW334
JW335
JW336
JW337
JW338
JW339
JW340
JW341
JW342
JW343
JW344
JW345
JW346
JW347
JW348
JW349
JW350
JW351
JW352
JW353
JW354
JW355
JW356
JW357
JW358
JW359
JW360
JW361
JW362
JW363
JW364
JW365
JW366
JW367
JW368
JW369
PANEL BOARD  
IC301
IC302
+
DSGX
.-
PLAY MODE/
TUNING MODE
FUNCTION
VOLUME
ROTARY
ENCODER
DISPLAY
EQ
-TUNING
/
CD
SW311
EC68:RU,E2,E3,E51,MX,AR,AUS/
EC78:RU,E2,E3,E51,MX,AR
LCD301
LIQDID CRYSTAL DISPLAY
9
Y
.-
L2
MAIN
BOARD
CN607
B2
KEY
POWER
BOARD
W401
STANDBY
1-875-490-
13
(13)
A2
KEY CD
BOARD
CD MECHANISM
DECK
A
B
C
D
E
F
G
1
2
3
4
5
6
(CHASSIS)
(Page 34)
(Page 27)
(Page 34)
Note:  Refer to “SUFFIX-12/SUFFIX-13 DISCRIMINATION 
OF PANEL BOARD” (page 3) of the servicing notes 
for suffi x-12 and suffi x-13.
 Ref. No.  Location
• Semiconductor Location
 Ref. No.  Location
 D301 
D-4
 D302 
D-2
 D303 
D-3
 D304 
C-4
 D305 
E-5
 IC301 
B-3
 IC302 
A-5
 LED301  A-1
 Q301 
B-1
 Q302 
D-4
 Q303 
D-4
 Q304 
D-3
 Q305 
D-2
 Q306 
D-2
 Q307 
E-5
 Q308 
E-5
 Q309 
E-5
 Q310 
E-5
 Q311 
F-5
 Q312 
F-5
 Q313 
F-4
 Q314 
F-4
 Q315 
F-5
 Q316 
F-4
 Q317 
F-4
 Q318 
F-4
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