Samsung SyncMaster 170T Service Manual page 13

5-2-1 No Video [Digital]
Check signal cable and connection.
Does the digital video signal appear
at the Pin 34, 35, 39, 40, 42, 43, 45 and 46 of IC601?
Yes
Is the output of Pin 1, 19 of IC602 High?
No
Check IC602 and related circuit.
No
Does the input signal appear at Pin of 76, 77, 78,
80 of IC601 (LHSYNCB, LVSYNCB,LDTGB, LCKBB)
No
Does the digital signals appear at R328, R329,
17
R330,R332, R333, R334, R335 and R336 (IC101)?
Yes
Does the sync signal appear
at the output of Pin 18, 14 of IC 244 ?
5
Yes
Does the input signal appear at the Pins 40, 41
Yes
Do the clock and DE signal appear at Pin 44, 46 of
IC 101?
digital video signal appear at the output port PDA,
Yes
During power on-off dose the input signal
appear at the R 410 and R 411 ?
SyncMaster 170T/180T
15 16 17 18
1 2 3 4
16 15
(V_SYNC, H * V_SYNC)
6
of IC 300?
7 8
( PLL H * V, MX _ PDEN)
(T_,DCLK, T_DE) and does the
19 20
PDB)?
(MX - SDA, MX - SCL)
Yes
Yes
No
18
No
No
No
No
Check TFT-LCD panel and Inverter.
Replace IC601
Check PC Signal and IC101
Check IC244 and related circuit.
Check the related circuit
for these ports
Check IC101 and related circuit.
Check IC501 and related circuit.
5 Troubleshooting
5-3