Zenith C32A38-2 Schematic
R726
C001
C005
R722
R725
R004
R003
C006
R728
W857
R723
R711
C323
R708
R709
R719
R703
PRINTED CIRCUIT BOARDS
MAIN/CRT (CHIP MOUNTED PARTS)
SOLDER SIDE
R704
R903
C613
R908
C604
R601
R902
R905
C647
R901
IC901
C603
R907
R909
R120
R604
C908
C113
C609
C327
C107
R103
25
C618
R319
C913
R102
C104
C916
C1004
C105
C108
C917
C918
C102
C912
41
R607
C301
C307
C914
C1007
IC101
IC302
R314
1
C309
C626
C627
C343
R129
R627
C344
R610
R1006
64
R609
C629
R113
R131
C318
R1002
C319
R1008
R123
R115
R621
R1014
R112
R110
R105
R616
R617
R106
R109
C101
C1526_1
R712
R1517
R1514
R437
C408
R1518
R1505
C1507
C1523
R1504
C1510
R1501
R1508
C1516
C1517
IC1501
C1508
R1506
C1509
C1502
C707
C1518
C708
C1519
C1511
C1534
R1521
C1521
C1533
R1520
R731
IC1502
R710
R715
C1531
R1512
R813
R816
C813
C811
C810
C801
R814
R809
R808
R801
R810
R811
R815
C809
B_SHORT
R534
R505
R532R533
F-3
R1516
R128
R126
F-4
PRINTED CIRCUIT BOARDS
STEREO (INSERTED PARTS)
SOLDER SIDE
J704
J703
J702
C709
C710
R706
R705
C713
C711
CD701
STEREO (CHIP MOUNTED PARTS)
SOLDER SIDE
W805
F-5
F-6
ABC D E F GH
8
7
1 CNVSS
2 XIN
3 XOUT
4 TEST1
5 VSS
6
6 MCU VCC
7 TEST0
8 FILT
9 HLT
10 VHOLD
11 CVIN
12 RESET IN
13 MCU RESET OUT
14 Y SW OUT
15 V/C GND
16 3.58 XTAL
17 C-APC
5
18 MCU5.7V REG OUT
19 NC
20 CVBS IN3
21 AUDIO IN3
22 V/C VCC
23 MCU TEST
24 CVBS IN2
25 AUDIO IN2
26 CVBS IN1
27 AUDIO IN1
28 5.7V REG OUT
29 C(Y/C) IN
4
30 Y(Y/C) IN
31 VREG VCC
32 FSC OUT
33 MONITOR OUT
34 AUDIO ATT OUT
35 AUDIO ATT FILTER
36 NC
37 V RAMP F/B
38 V RAMP OUT
39 V RAMP CAP
40 8.7V REG OUT
3
2
1
MEMORY IC
C118
1006.3V KA
41 NC
42 HVCO F/B
43 AFC FILTER
44 DEF GND
45 FBP IN
46 H OUT
47 DEF VCC
48 NC
49 HI VCC
50 R OUT
51 G OUT
52 B OUT
53 ACL
54 NC
55 PROTECT
56 SDA
57 H_CTL
58 SCL
59 NC
60 NC
61 NC
62 DEGAUSS_H
63 STANDBY_H
64 VOLUME
65 NC
66 AFT
67 KEY1
68 KEY2
69 POWER_ON
70 REMOCON
71 AV2
72 AV1
73 AUDIO_MUTE
74 X-RAY
75 IIC_OFF
76 ON_TIMER
77 SYNC
78 POWER FAIL
79 X-RAY_TEST
80 EXT_MUTE
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
R131
2.2K
R113
2.2K
R123
2.2K
R115
22K
R125
47K 1/4W
R143
47 1/4W
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C101
0.01 F
AT+5V
SDA
SCL
AFT
KEY1 V_OUT
KEY2 V_FEEDBACK
POWER_ON
REMOCON
AV2
AV1
AUDIO_MUTE FSC
X-RAY
IIC_OFF
POWER_FAIL
EXT_MUTE
AT+5V
C123
0
4.9
B+
OS101
RPM7138-H5
1234
E0VCC
IC199
S-24C04BDP-LA
4.9 0 4.8
R108 100 1/4W
R107 100 1/4W
R112 100K
R127
1K 1/4W
R129
REMOCON
1016V KA
4.8
123
CH UP
GND
Vout
0000
E2
E1
MODE
47K
SCL
W860
MICON/CHROMA IC
OEC7091B
R128
560
SW101
CH DOWN
EVQ21505R
5678
IC101
VSS
SDA
4.8
R106
R124 22K 1/4W
DEGAUSS_H
R110
10K
R109 10K
3.3K
R105
SW102
R132
47K 1/4W
R130
22K 1/4W
3.3K
0
6566676869
4.8
4.9
4.9
4.9
4.9
70717273747576777879
4.9
4.9
4.9
1.8
4.9
0
NC
0
NC
4.9
0
4.8
1 101112131415161718
0 5.0 4.9 0 4.9 0 0.2 2.8 4.9 4.9 0 3.3 2.9 5.5 0 1.9 2.3 0 1.95.1
R126
2.7K
VOL UP
SW103
VOL DOWN
EVQ21505R
EVQ21505R
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
ROM
RAM
I/O
IIC
TIM
INT
PWM
AD
0
W809
560 1/4W
SW104
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
XO
3
NC
KEY2
R101
EVQ21505R
4
C103_1
KEY1
POWER
CPU core
C102
0.01 F
22010V YK
POWER_ON
MCU GND
W810
SW105
P.CON+5V
OSD
CCD
VCO
7
0 3.1
C104
R102
EVQ21505R
MICON/CHROMA/TUNER SCHEMATIC DIAGRAM
(MAIN PCB)
1016V KANP
C633
R618
5.6K 1/4W
H_CTL
8809
0.01 F
C106
1K
R103
C105 470P B
SDA/SCL
P-ON CONT
CLK CONT
150V KA
1K
220P B
C107
C108
R617
NC
IIC BUS
DECODER
0.001 B
R120
R104
27K
D607 MTZJ12B
ABCL
D606 11E1-EIC
R616 33K
Power Manage.
MCU RESET
MCU
CLK
C113
470
1M 1/4W
MTZJ12B
D609
D608 MTZJ12B
G.OUT
B.OUT
R615 100 1/4W
R614 100 1/4W
5
6
PGB OUTPUT Stage
DRIVE
CUT-OFF
HV BLK
2.5
150V KA
C601
C602
560P CH
W823
R.OUT
C632_1
R613 100 1/4W
7
RGB Proc.2
OSD SW
CONTRAST
BRIGHTNESS
Vldeo Proc.
C-TRAP/YDELAY
SHARPNESS
BLACK STRETCH
Y MUTE
LPF
6bB AMP
VCXO
X601
100CT3R505
3.579545MHz
C603
22P CH
0.1 F
C604
0.022 F
C605
R601
AT+5V
4.9
ATTENTION
R620
1K 1/4W
3
W828
47010V YK
C630
16V
100
KA
R611
C629
R609
120K
0.01 F
NC
NC
Hor.Proc.
SYNC SEPA/Hor.VCO
Hor.COUNT DOWN
AFC-1/H COINCIDENT
AFC-2 H PHASE
R627
RGB Proc.1
RGB MATRIX
COLOR CONT
192 20 21 22 23 24
NC
R602
100 1/4W
47010V YK
C606
150V KA
8.2K
5V REG
5.5
Q601
KTC3203_Y
8.8
:LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N’UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
H_SYNC
2
10K 1/4W
10K
Ver.Proc.
Ver SYNC SEP
Ver.COUNT DOWN
V RAMP
Chroma Proc.
ACC/C-BPF
APC/KILLER
TINT/DEMO
NCNC
C609
0.01 F
C610
476.3V KA
R603_1
120 1/2W
R610
C628
5.6K
150V KA
R621
220
H_OUT
F
C626 0.01 F
C627 0.01
03.73.509.06.78.408.45.04.95.12.85.105.104.8000000
41424344454647484955051525354555657585966061626364
ATT
NC
8.8
40
4.7
3.7
2.2
0
2.8
3.5
5.1
3.0
8.9
2.4
30 31 32 33 34 35 36 37 38 39
2.4
5.7
2.3
2.0
2.3
25 26 27 28 29
C624 1 MKT
22K 1/4W
NC
NC
NC
NC
NC
R606
6.0
4
C618
0.01 F
5.0
H.CTL
5.6
Q607
KTC3198
W889
H_CTL
8
P.CON+5V
TUNER+5V
R604
33
0.001 B
STEREO+5V
C613
P.CON+5V
C623
10016V YK
R607
100
C620
0.01 F
D603
1SS133
C617
10010V YK
CAUTION
7.9
8V REG
8.5
Q608
KTC3209_Y
11.3
7.9
8V REG
Q606
KTC3203_Y
8.5
11.3
C647
0.022 F
C621
4716V YK
D604
MTZJ8.2B
4.9
5.5
5.5
5V REG
Q603
KTC3203_Y
5.5
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
7.2
7.2
4.9
7.2
5.0
KTC3203_Y
R605
180 1/2W
5V REG
Q602
KTC3209_Y
R629_1
18 3W
5V REG
Q610
TU001
ENG36A01GR
ACCESSORY
TM101
RC-GT010
R608
100 1/4W
19
20
ARE
8
FROM/TO COMBI/FILTER
Y_IN
ON_TIMER
AV1
FROM/TO DEFLECTION/CRT
C653
150V YK
P.CON+8V[B]
W847
UNREG+12V
C652
0.2250V KA
UNREG+12V
18
1
NC
NC
2
3
NC
4
NC
5
NC
6
NC
7
NC
8
NC
9
10
11
12
13
14
NC
15
NC
16
17
21
C002
10006.3V YK
C006
100P CH
C005
100P CH
R005
100 1/4W
C004
0.022 F
D001
C001
0.01 F
R003
100
R006
560 1/4W
MTZJ33B
R.SIGNAL
G.SIGNAL
B.SIGNAL
L001
10uH
R004
100
R001
68K 1/2W
R002
68K 1/2W
TUNER+5V
SCL
TU_AUDIO
+B
TU_VIDEO
SDA
AFT
AUDIO_OUT_R
AUDIO_OUT_L
IIC_OFF
SDA
SCL
DEFLECTION SIGNAL
AUDIO SIGNAL
TUNER VIDEO SIGNAL
CLAMP
V_OUT
GND
V_FEEDBACK
ABCL
H_OUT
X-RAY
R.OUT
G.OUT
B.OUT
H_SYNC
FROM/TO POWER
POWER_FAIL
UNREG+12V
+B
DEGAUSS_H
GND
TO AV
P.CON+8V[B]
GND
AV2
AV1
EXT_MUTE
TU_VIDEO
FROM/TO COMBI/FILETR
STEREO+5V
C_IN
GND
FSC
P.CON+8V[B]
FROM/TO SOUND
SCL
SDA
GND
AUDIO_MUTE
STEREO+5V
P.CON+8V[B]
AUDIO_OUT_R
AUDIO_OUT_L
TU_AUDIO
TEST POINT
AUDIO_R
AUDIO_L
GND
IIC_OFF
SDA
SCL
GND
PCB010
TMC567
CP601
173979-7
7
6
5
4
3
7
6
5
4
3
2
1
2
1
G-1
ABC D E F GH
G-2
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