Troubleshooting; No Picture - Sanyo PLC-XF47 Service Manual

■ Troubleshooting

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No Picture

Check the CG_MOTHER Board.
SLOT1
SLOT2
SLOT3
SLOT4
Check the Vcc voltages.
S9.6V / S6V
3.3V / 5V / -5V (Switched)
Check the signal lines.
DIF_SCDT/H/V
IC9004
BUFFER
DIF_DE
BB
IC9001
BUFFER
GB
RB
IC9002
BUFFER
BA
GA
IC9003
BUFFER
RA
IC9137
DIFCLK_LA
A_HS1/2/3/4_IN
IC9086
A_VS1/2/3/4_IN
IC9088
CS1/2/3/4_IN
IC9131
M-IDA1/2/3/4 <XC3S50>
M-IDB1/2/3/4
M-IDC1/2/3/4
SLOT1/2/3/4
SCLK_I/O, SDATA_I/O
A_R1/G1/B1
IC9011
RGB SW
A_R2/G2/B2
<AD8185>
SLOT_SEL1/SEL2
A_R3/G3/B3
IC9012
RGB SW
A_R4/G4/B4
<AD8185>
- 57 -
(Always)
DIF SCDT/H/V
DIF DE
IC9132
DIFCLK
BB
GB
RB
BA
GA
RA
H_SYNC
V_SYNC
C_SYNC
IC9134
IC9135
DIFCLK
IC9136
IC9133
IIC_SCL/SDA
K90M
R
R
G
B
K90L
G
R
G
K90K
B
B