Pioneer SC-37 Service Manual page 57

5
QQ
H
3 7 63 1515 0
IC101 (Through hole)
Are there
signals?
Yes
R106 - R110,R113
Are there
signals?
Yes
IC1204 (Through hole)
Are there
signals?
Yes
R1242 - R1245,R1248,
R1249,R1304
Are there
TE
L 13942296513
signals?
Yes
IC1208 - IC1210,IC1218
(input Pin)
Are there
signals?
Yes
IC1208 - IC1210,IC1218
(output Pin)
Are there
signals?
Yes
To Step 4-7
www
.
5
http://www.xiaoyu163.com
6
VID0 - VID7,VICLK
No
Check the patterns between
R1202,R1208,R1212 and IC101.
VOD0 - VOD7,VOCLK
No
Check the IC101 and its
peripheral circuits.
VOD0 - VOD7,VOCLK
No
Check the patterns between
R106,R107,R108,R109,R110,
R113 and IC1204.
No
Check the patterns between
R1242,R1243,R1244,R1245,
R1248,R1249,R1304 and IC1204.
No
Check the R1242 - R1245,R1248,
R1249,R1304 and its peripheral
patterns.
D**,TXICLK
No
Check the IC1208 - IC1210,
IC1218 and its peripheral circuits.
L
x ao u163
y
i
6
http://www.xiaoyu163.com
7
Step 4-7: Composite IN - Composite OUT (DVC ON)
2 9
8
CN1502 (Pin 18)
Is there
a signal?
Yes
IC1102 (Pin 36)
Is there
a signal?
Yes
IC1102
(Pins 2,5-8,20,59-64)
Are there
signals?
Yes
R1101,R1107,R1109
Are there
signals?
Q Q
3 6 7 1 3 1 5
Yes
IC1202,IC1203 (input Pin)
Are there
signals?
Yes
R1202,R1208,R1212
Are there
signals?
Yes
IC101 (Through hole)
Are there
signals?
Yes
I
co
.
SC-37
7
8
9 4 2 8
A_VVYIN
No
Diagnose the COMPONENT Assy
A_VVYIN
No Check the patterns and circuits
between
IC1502 (Pin 18) and IC1102 (Pin 36).
Q16 - Q23,RXOCLK,RXHSYNC,
RXVSYNC,RXDE
No
Check the IC1102 and its
peripheral circuits
(e.g. VSSDA/VSSCL).
(Pin 20: 27 MHz)
Q16 - Q23
No
Replace IC1102.
0 5 8 2 9 9 4 2 8
Q16 - Q23,RXOCLK
No
Check the patterns between
IC1202,IC1203 and IC1102.
(IC1203 input Pin = 27 MHz)
VID0 - VID7,VICLK
No
Check the IC1202,IC1203 and its
peripheral circuits.
(R1212: 27 MHz)
VID0 - VID7,VICLK
No
Check the patterns between
R1202,R1208,R1212 and IC101.
m
9 9
A
B
C
9 9
D
E
F
57
8