Product specifications

5 Troubleshooting
LW15S13C 5-5
CONFIDENTIAL
Does the signal appear at
Pin 67 (Tuner sound signal) and
Pin 47, 48 (PC sound) and
Pin 56, 57 (SCART sound) and
Pin 50, 51 (VCR) of
IC 919 (MSP3451)?
Check the CN403 (PC conector) and the
CN830, SK3 and the CN888 (Tuner) and
the CN505_1, CN920_1.
Yes
No
Does the signal appear at Pin 27,
28 of IC919 (MSP3451)?
Check the IC919 and
related circuit of IC919.
Yes
No
Does the signal appear
at FT935, FT936?
Check the IC503 (Audio amp) and
related circuit of IC503.
Yes
No
Replace the speaker.
5-4 No Sound