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5 Troubleshooting
5-1 No Power
Does proper DC 14 V appear at No
Check SMPS PCB and Adapter.
DC jack connected to CN801?
Yes
Does proper DC 5 V appear at No
Check IC803.
Pin 1 of IC803?
Yes
Does proper DC 14V appear at No
Check IC803.
Pin 2 of IC803?
Yes
Does proper DC 3.3 V appear at No
Check IC804.
Pin 1 of IC804?
Yes
Does proper DC 2.5 V appear at No
Check IC105.
Pin 4 of IC105?
Yes
Check IC908.
ES15A*/ES17A* 5-1
5 Troubleshooting
5-2 No Video (PC Signal)
Power indicator is green.
Yes
Does the signal appear No
at C106, C107, C108 Check CN100.
of R, G, B input?
Yes
Does the clock pulse No
Check X100 and related circuit of X100.
appear at X100?
Yes
Does the clock pulse appear at No
Check related circuit of IC102.
output of RA102 ~ RA107?
Yes
Does the clock pulse No
Check R401 and related circuit of R401.
appear at R401?
Yes
Does the clock pulse appear at No
Replace R605 ~ R604.
output of R605 ~ R614?
Yes
Replace LCD Panel.
5-2 ES15A*/ES17A*
5 Troubleshooting
5-3 No Picture (TV, Video, S-Video, Scart Video)
Check Pin 71, 72 (S-Video)
No Check the CN806 (Tuner) and the
and Pin 73 (VCR) and Pin 74
CN200 (Scart connector) and the
(Scart-Vin) and Pin 75 (RF-CVBS)
CN802 (VCR connector).
of IC201 (VPC3230D).
Yes
Does the signal appear at No Check the IC201 (VPC3230D)
RA200 ~RA203? and related circuit of IC201.
Yes
Does the signal appear at No Check the IC300 and
RA300 ~ RA303 of related
related circuit of IC300.
IC300 (FLI2200)?
Yes
Check the IC400 and R422 ~ R426.
ES15A*/ES17A* 5-3
5 Troubleshooting
5-4 No Sound
Does the signal appear at
Pin 67 (Tuner sound signal) and Check the CN803 (PC conector) and the
No
Pin 57, 56 (PC sound) and Pin 51, 50 CN802 (VCR connector) and the CN200
(VCR sound) and Pin 48, 47 (Scart (Scart connector and the CN806 (Tuner).
sound) of IC 700 (MSP3451)?
Yes
Does the signal appear at Pin 27, No Check the IC700 and
28 of IC700 (MSP3451)? related circuit of IC700.
Yes
Does the signal appear No Check the IC702 (Audio amp) and
at L702 ~L705? related circuit of IC702.
Yes
Replace the speaker.
5-4 ES15A*/ES17A*