C2GYT
CRT BOARD (Component Location)
MAIN BOARD (Component Location)
Waveforms & Voltages
(On the Main Board)
Q137
B 6.2V
C 9.7V
E 5.6V
Q1230
B 2.5V
C 9.6V
E 1.9V
IC202
Pin-1: 9.0V
2: GND
3:
5.0V
IC201 (IF/VIDEO/CHROMA)
Pin-1: GND
2:
602V
3:
1.0V
4:
7.5V
5:
2.7V
6:
1.5V
7:
1.5V
8:
5.0V
9:
2.4V
10:
4.3V
11:
0.8V
12:
3.0V
13:
0V
14:
4.1V
15:
6.2V
16:
6.2V
17:
3.0V
18:
2.9V
19:
3.1V
20:
3.1V
21:
5.0V
22:
9.7V
23:
2.6V
24:
2.4V
25:
6.0V
26:
5.0V
27:
0.6V
28:
2.6V
29:
3.9V
30:
2.6V
31:
2.8V
32:
3.3V
33:
3.9V
34:
1.7V
35:
3.2V
36:
3.2V
37:
0V
38:
1.7V
39:
3.0V
40:
3.3V
41:
1.5V
42:
9.7V
43:
2.2V
44:
2.2V
45:
3.8V
46:
3.2V
47:
2.3V
48:
2.5V
49:
4.1V
50:
4.1V
51:
3.1V
52:
6.2V
IC501 (Vert. Out)
Pin-1: GND
2:
13.0V
3:
25.0V
4:
5.0V
5:
5.0V
6:
25.0V
7:
1.7V
IC001A (AUDIO AMP.)
Pin-1: 1.2V
2:
0.7V
3: MUTE ON=0.8V, OFF=5.8
4:
GND
5:
0.7V
6:
1.2V
7:
5.6V
8:
GND
9: 19.9V
10:
5.7V
IC801 (CPU)
Pin-1: 4.1V
2:
4.9V
3:
-
4: BBE ON=0.7V, OFF=0V
5:
0V
6:
5.1V
7: TV=0V,AV=6.8V
8: AV1=0.02V,AV2=9.6V
9: 0.04V
10:
4.1V
11:
5.0V
12: BASS ON=5.1V,OFF=0V
13:
5.1V
14:
5.0V
15: 5.1V
16:
-
17: 5.1V
18: GND
19:
2.3V
20:
2.3V
21:
GND
22:
5.1V
23:
4.9V
24:
3.8V
25: 5.0V
26: 2.8V
27: 2.0V
28: 0V
29:
1.5V
30:
3.6V
31:
5.1V
32:
4.1V
33:
5.1V
34:
4.1V
35: 5.0V
36: 5.1V
37: 5.0V 38: 0V
39:
0V
40:
0V
41:
0V
42:
0V
IC802 (Memory)
Pin-1: GND
2:
GND
3:
GND
4:
GND
5:
5.1V
6:
5.1V
7:
GND
8:
5.1V
Q101
B 1.6V
C 4.0V
E 0.8V
Q140
B 6.2V
C
0V
E 6.8V
Q1902
B 5.0V
C -0.4V
E 5.1V
Q261
B 1.7V
C
0V
E 2.3V
Q811
B
0V
C 4.5V
E
0V
Q431
B 0.4V
C 11.8V
E
0V
Q432
B
0V
C 129.5V
E
0V
Q527
B
0V
C 3.8V
E
0V
Q190
B 3.2V
C 0V
E 3.8V
Q191
B 6.6V
C 3.0V
E 7.2V
Q183
B 3.8V
C 6.6V
E 3.2V
Q613
B -0.6V
C 320V
E
0V
Q681
B 0.07V
C 10.4V
E
0V
Q813
B 5.1V
C 0V
E 5.8V
Q886
B 0.7V
C 0.07V
E
0V
Q684
B 0.7V
C 0V
E
0V
Q824
B 4.4V
C 5.0V
E 5.1V
Q683
B 25.8V
C 25.7V
E 26.0V
Q612
B 0V
C -0.6V
E -0.3V
Q611
B 14.5V
C -0.3V
E 14.4V
Q685
B 0.5V
C 35.1V
E 0.5V
Q686
B 35.1V
C 0V
E 35.2V
IC631 (+130V ERR. DETECT)
Pin-1: 129.5V
2: 35.2V
3: GND
IC3071 (AUDIO CONTROL)
Pin-1: 4.9V
2:
4.9V
3:
4.8V
4:
4.9V
5:
4.6V
6:
4.6V
7:
4.9V
8:
GND
9:
4.2V
10:
4.3V
11:
5.0V
12:
5.0V
13:
GND
14:
4.9V
15:
4.6V
16:
4.5V
17:
4.9V
18:
4.8V
19:
4.8V
20:
9.7V
IC3501 (BBE)
Pin-1:
GND
2:
1.0V
3:
2.8V
4:
0V
5:
5.0V
6:
5.0V
7:
5.0V
8:
5.0V
9:
5.0V
10:
5.0V
11:
5.0V
12:
5.0V
13:
5.0V
14:
5.0V
15:
5.0V
16:
N.C.
17:
5.0V
18:
5.0V
19:
5.0V
20:
5.0V
21:
9.7V
22:
3.0V
23:
N.C.
24:
1.0V
IC1201 (AUDIO SW)
Pin-1: 2.5V
2:
3.5V
3:
2.5V
4:
3.5V
5:
2.5V
6:
GND
7:
GND
8:
GND
9:
0V
10:
0.7V
11:
3.5V
12:
2.5V
13:
2.5V
14:
2.5V
15:
3.5V
16:
9.6V
IC1401 (VIDEO SW)
Pin-1: 3.8V
2:
9.7V
3:
6.3V
4:
3.4V
5:
GND
6:
3.8V
7:
3.6V
8:
0.7V
9:
3.8V
10: 20.8V
IC1501 (VIDEO SW)
Pin-1:
4.0
2:
3.8V
3:
6.9V
4:
6.8V
5:
6.8V
6:
GND
7:
GND
8:
GND
9:
0V
10:
0V
11:
6.3V
12:
3.8V
13:
6.9V
14:
6.9V
15:
3.8V
16:
9.7V
Q1231
B 2.5V
C 9.6V
E 1.9V
Q138
B
0V
C 2.7V
E
0V
Q1401
B 3.3V
C
0V
E 4.0V
Q1402
B 7.4V
C
0V
E 6.3V
Q1501
B 6.8V
C 9.7V
E 6.1V
Q1502
B 3.8V
C
0V
E 4.5V
Q461
B 15.0V
C
0V
E 14.4V
Q462
B 0.6V
C 14.4V
E
0V
Q540
B 0.6V
C
0V
E
0V
Q661
B 9.8V
C 10.4V
E 10.4V
Q814
B -0.1V
C 5.0V
E
0V
Q815
B -0.1V
C 4.1V
E
0V
Q816
B
0V
C
0V
E 0.7V
IC651
Pin-1: 15.3V
2: GND
3: 5.1V
(On the CRT Board)
5.0Vp-p
Horiz.
2.5Vp-p
Vert.
5.0Vp-p
Horiz.
6.5Vp-p
Horiz.
5.0Vp-p
Horiz.
5.0Vp-p
Horiz.
1.2Vp-p
Horiz.
1.4Vp-p
Horiz.
1.7Vp-p
Horiz.
50Vp-p
Horiz.
47Vp-p
Vert.
2.5Vp-p
Vert.
1000Vp-p
Horiz.
5.0Vp-p
Horiz.
5.0Vp-p
Vert.
1.7Vp-p
Horiz.
5.3Vp-p
6.9Vp-p
5.7Vp-p
5.3Vp-p
6.2Vp-p
2.3Vp-p
0.8Vp-p
1.3Vp-p
2.0Vp-p
46.4Vp-p
2.3Vp-p
4.9Vp-p
5.2Vp-p
1000Vp-p
40.8Vp-p
IC201-pin11
<Sandcastle>
IC201-pin12
<H drive>
IC201-pin18
<R out>
IC201-pin19
<G out>
IC201-pin20
<B out>
IC201-pin21
<V drive>
IC201-pin36
<CVBS int.>
IC201-pin39
<Sync in>
IC201-pin38
<Y out>
IC501-pin2
<V out>
IC501-pin4
<V drive>
IC801-pin1
<H sync>
IC801-pin2
<V sync>
IC201-PIN52
<IF out>
Q432-C
<H out>
1.5Vp-p
Q613-C
<Power out>
550Vp-p
Q612-C
<Power drive>
6.0Vp-p
4.5Vp-p
470Vp-p
Q612-B
<Power drive>
2.4Vp-p
Q431-C
<H drive>
35Vp-p
Horiz.
31.2Vp-p
Horiz.
Q432-B
<H out>
Q721-C
<R-out>
Q701-C
<B-out>
Q711-C
<G-out>
150Vp-p
138Vp-p
124Vp-p
Q701
B 11.7V
C 142.9V
E 11.3V
Q711
B 11.7V
C 151.1V
E 11.3V
Q712
B 2.9V
C 11.4V
E 2.6V
Q721
B 11.7V
C 146.7V
E 11.4V
Q722
B 3.0V
C 11.4V
E 2.7V
Q731
B 0.2V
C
0V
E 1.0V
Q732
B 9.7V
C
0V
E 9.6V
Q702
B 3.1V
C 11.4V
E 2.8V
IC3501
BBE
IC1201
AUDIO SW
VIDEO SW
IC1501
IC1401
VIDEO SW
IC501
VERT. OUT
K1003
K1002
K1004
K
2
0
0
1
Q461
H-WIDTH
VR462
C
6
4
1
K
E
K003
K002
Q432
H-OUT
Q431
H-DRIVE
Q613
POWER-OUT
Q612
POWER
DRIVE
IC801
CPU
IC802
IC3071
AUDIO
CONTROL
(SOLDER SIDE)
IC001 AUDIO AMP.
IC001A
AUDIO AMP.
IC201
IF/VIDEO/CHROMA
IC281
SECAM
(SOLDER SIDE)
(SOLDER SIDE)
(SOLDER SIDE)
A101 TUNER
T471
FBT.
T431
H-DRIVE
TRANS.
T611
CONVERTER TRANS.
T
E
L
E
T
E
X
T
U
N
IT
TP-E
TP-A
Q721
R-OUT
Q711
G-OUT
Q701
B-OUT
C2GC
B10E2760B_X
Q2001
B 0.2V
C 5.4V
E
0V
Q2002
B 0.2V
C 5.4V
E
0V
Q2003
B 0.4V
C 5.4V
E 0.2V
Q2004
B 4.6V
C 4.4V
E 4.2V
IC2001 (Teletext Decoder)
Pin-1: 0.4V
2 :
0V
3 :
5.4V
4 :
0V
5 :
0V
6 :
5.4V
7 :
GND
8 :
0.2V
9 :
0.2V
10: 0.4V
11:
1.1V
12 :
5.1V
13 :
5.3V
14 :
2.6V
15 :
0.2V
16 :
4.6V
17 :
4.2V
18 :
-
19:
-
20:
0.3V
21 :
4.8V
22 :
5.2V
23 :
2.7V
24 :
2.3V
25 :
0V
26 :
0V
27 :
0V
28:
1.7V
(On the Teletext Board) Note: Voltage rating in decoder unit taken using teletext signal.
Q2005
B 4.7V
C 5.2V
E 5.4V
TELETEXT BOARD (Component Location)
F8LC