Pioneer SC-37 Service Manual page 56

1
QQ
Step 4-5: Component IN (more than 480p) - HDMI OUT (DVC ON)
3 7 63 1515 0
CN1502 (Pins 2,4,6)
A
No
Are there
signals?
Yes
IC1102 (Pins 47-50)
Are there No
signals?
B
Yes
IC1102 (output Pin)
(Pins 2,5-8,12-20,
25-28,59-64)
Are there No
signals?
Yes
C
IC1205 - IC1207,IC1211,
IC1217 (input Pin),
IC1205 (Pins 2-9),
IC1211 (Pins 4,5,8,9),
TE
L 13942296513
IC1206 (Pins 2-5),
IC1215 (Pins 3-5),
IC1207 (Pins 6-9),
IC1217 (Pin 2)
Are there No
signals?
D
Yes
IC1204 (Through hole)
No
Are there
signals?
Yes
M
To Step 4-6
E
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F
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A_VCYIN,A_VCRIN,A_VCBIN
Diagnose the COMPONENT Assy.
SG_A,SG_B,SG_C
Check the patterns and circuits
between CN1502 (Pins 2,4,6) and
IC1102 (Pins 47-50).
Q**,RXOCLK,RXHSYNC,
RXVSYNC,RXDE
Check the IC1102 and its
peripheral circuits (e.g. SDA/SCL).
Q**,RXOCLK,RXHSYNC,
RXVSYNC,RXDE
Check the patterns between
IC1205, IC1206, IC1207,
IC1211,IC1217 and IC1102.
D**,TXVCLK,TXVSYNC,
TXHSYNC,TXDE
Check the patterns between
IC1204 and IC1205, IC1206,
IC1207,IC1211,IC1212.
Q**: 6,7,10,11,16-23,28-35
D**: 6,7,10,11,16-23,28-35
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Step 4-6: Component IN (at 480i) - HDMI OUT (DVC ON)
8
CN1502 (Pins 2,4,6)
Are there
signals?
Yes
IC1102 (Pins 47-50)
Are there
signals?
Yes
IC1102 (Pin 36)
Is there
a signal?
Yes
IC1102
(Pins 2,5-8,20,59-64)
Are there
signals?
Q Q
3 6 7 1 3
Yes
(Pin 20: 27 MHz)
R1101,R1107,R1109
Are there
signals?
Yes
IC1202,IC1203 (input Pin)
Are there
signals?
(IC1203 input Pin = 27 MHz)
Yes
R1202,R1208,R1212
Are there
signals?
(R1212: 27 MHz)
Yes
H
u163
.
SC-37
3
4
2 9 9 4 2 8
A_VCYIN,A_VCRIN,A_VCBIN
No
Diagnose the COMPONENT Assy
SG_A,SG_B,SG_C
No
Check the patterns and circuits
between CN1502 (Pins 2,4,6) and
IC1102 (Pins 47-50).
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).
1 5 0 5 8 2 9 9 4
Q16 - Q23
No
Replace IC1102.
Q16 - Q23,RXOCLK
No
Check the patterns between
IC1202,IC1203 and IC1102.
VID0 - VID7,VICLK
No
Check the IC1202,IC1203 and its
peripheral circuits.
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co
4
9 9
2 8 9 9