Toshiba W-704 Service Manual page 110

8. CIRCUIT DIAGRAMS
8-1. Waveform
Power PIF
5
1 Q801, COLLECTOR H001, Pin 1 A-15
J-2
AUDIO IN
REC
PLAY
V : 500mV/div
V : 50V/div
H : 200µs/div
H : 5µs/div
2 6 H001, Pin 5
Q802, BASE B-15
K-2
VIDEO IN
REC
PLAY
V : 500mV/div
V : 0.5V/div
H : 20µs/div
H : 5µs/div
7
3 Q870, Pin 3 H001, Pin 19 D-15
L-3
VIDEO OUT
REC
PLAY
V : 500mV/div
V : 1V/div
H : 10µs/div
H : 10ms/div
4 8 H001, Pin 1 A-15
T802, Pin 9
J-4
AUDIO IN
REC
REC
V : 500mV/div
V : 5V/div
H : 500µs/div
H : 5µs/div
9
H001, Pin 5 B-15
Fig. 8-1-1
VIDEO IN
REC
V : 500mV/div
H : 20µs/div
10 H001, Pin 19 D-15
VIDEO OUT
REC
V : 500mV/div
H : 10µs/div
11
ICD01, Pin 15 C-18
SDA1
PLAY
V : 2V/div
H : 100ms/div
KDB
19
12 ICD01, Pin 16 C-18 IC501, Pin 6
SCL1
PLAY
V : 2V/div
H : 100ms/div
13 20 IC501, Pin 20
ICD01, Pin 25 B-16
NORMAL
AUDIO OUT
PLAY
V : 500mV/div
H : 1ms/div
14
ICD01, Pin 27 B-16
Fig. 8-1-3
TUNER
AUDIO OUT
PLAY
V : 500mV/div
H :1ms/div
15 ICD01, Pin 15 C-18
SDA1
REC
V : 2V/div
H : 100ms/div
16
ICD01, Pin 16 C-18
SCL1
REC
V : 2V/div
H : 20ms/div
17 ICD01, Pin 25 C-17
NORMAL
AUDIO OUT
REC
V : 500mV/div
H : 500µs/div
18
ICD01, Pin 27 B-16
TUNER
AUDIO OUT
REC
V : 500mV/div
H : 500µs/div
Fig. 8-1-2
Selvo/Logic
21 IC501, Pin 50 30 IC506, Pin 3
K-10 I-12
SCAN1
C SYNC
V : 10V/div
V : 1V/div
H : 2ms/div
H : 20µs/div
22 31
J-11 IC506, Pin 22 IC506, Pin 3
H-7
CFGA AMP
G1
PLAY (SP)
V : 10V/div
V : 500mV/div
H : 2ms/div
H : 500µs/div
23 IC506, Pin 1 32 P502, Pin 9
H-7
CTL OUT
PLAY (EP)
V : 1V/div
H : 10ms/div
24 33
IC501, Pin 32 K-12 P502, Pin 9
PV/PH
STILL
V : 1V/div
H : 5ms/div
25 IC501, (a) Pin 34 34 IC506, Pin 17
J-12
(b) Pin 35
J-12
(a)
PLAY (EP)
(b)
V : 2V/div
H : 5µs/div
26 35 IC501, (a) Pin 70
IC501, Pin 43 J-12
(b) Pin 69
REC CTL OUT
REC
V : 1V/div
H : 10ms/div
27 36
IC501, Pin 78 IC501, (a) Pin 52
I-10
(b) Pin 53
V : 1V/div
H : 20µs/div
28 37
IC501, Pin 74 I-10 IC503, Pin 7, 8, 9
V : 1V/div
H : 0.5µs/div
29 38
IC506, Pin 3 IC503, (a) Pin 15
H-6
(b) Pin 16
CTL. AMP
EP CUEx21
(AC)
V : 1V/div
H : 500µs/div
Fig. 8-1-4
Video/Audio
39 IC201, Pin 15 49 IC201, Pin 59
H-6 E-5
CTL. AMP
SP CUE (x7) PLAY
(AC)
V : 20mV/div
V : 1V/div H : 20µs/div
H : 1ms/div
40 50
IC201, Pin 17 IC201, Pin 63
H-6 E-6
CTL. AMP
PLAY SP PLAY
(AC)
V : 20mV/div
V : 1V/div H : 20µs/div
H : 10ms/div
41 IC201, Pin 24 51 Q210, Emitter
G-7 D-6
CAP ERR PLAY
EP SLOW
V : 10mV/div
V : 1V/div H : 20µs/div
H : 10ms/div
42 52
G-7 IC201, Pin 26 IC201, Pin 24
D-7
CAP ERR
PLAY
SP SLOW
V : 10mV/div
V : 1V/div H : 20µs/div
H : 20ms/div
43 IC201, Pin 30 53 IC201, Pin 26
G-7 D-7
CFGB AMP PLAY
SP PLAY
V : 10mV/div
V : 500mV/div
H : 20µs/div
H : 500µs/div
44 54
H-10 IC201, Pin 42 IC201, Pin 28
B-6
I-10
(a)
PLAY
SP PLAY
(b)
V : 20mV/div
H : 20µs/div
V : 2V/div
H : 100ms/div
45 IC201, Pin 44 55 IC201, Pin 30
I-11 B-6
I-11
(a)
PLAY
(b)
V : 200mV/div
H : 20µs/div
V : 2V/div
H : 200µs/div
46 56
F-13 IC201, Pin 47 IC201, Pin 49
B-6
F-14
PLAY
V : 20mV/div
V : 5V/div H : 20µs/div
H : 2ms/div
47 IC201, Pin 49 57 IC201, Pin 51
G-14 B-5
G-14
(a)
PLAY
(b)
V : 100mV/div
H : 10µs/div
V : 500mV/div
H : 5ms/div
48 58
IC201, Pin 58 IC920, Pin 14
B-4
PLAY
V : 10mV/div
H : 20µs/div
Fig. 8-1-5
59 IC920, Pin 19
B-4 H-15
PLAY
V : 10mV/div V : 500mV/div
H : 20µs/div H : 200µs/div
60
IC920, Pin 31
B-4 H-16
PLAY PLAY
V : 10mV/div V : 100mV/div
H : 250ns/div H : 200µs/div
61 IC920, Pin 19
B-11 H-15
PLAY MOD
AUDIO
V : 100mV/div V : 200mV/div
H : 20µs/div H : 500µs/div
62
IC920, Pin 22
D-6 H-15
REC REC
V : 200mV/div
V : 200mV/div
H : 20µs/div
H : 1µs/div
63 IC920, Pin 35
D-7 H-17
REC REC
V : 100mV/div V : 200mV/div
H : 10µs/div H : 500µs/div
D-7
REC
V : 100mV/div
H : 10µs/div
D-7
REC
V : 100mV/div
H : 20µs/div
B-5
REC
V : 1V/div
H : 20µs/div
B-5
REC
V : 500mV/div
H : 20µs/div
G-15
LINE OUT
V : 500mV/div
H : 200µs/div