CONFIDENTIAL
5 Troubleshooting
5-4
LTM1525/LT15S13C
Does the signal appear at
Pin 67 (Tuner sound signal) and
Pin 47, 48 (PC sound) and Pin 56, 57
(VCR sound) and Pin 50, 51 (DVD)
of IC 919 (MSP3421)?
Check the CN401(PC Sound) and the
SK3(VCR Sound) and the SK2
(DVD/DTV Sound) the CN828(Tuner).
Yes
Does the signal appear at Pin 27,
28 of IC919 (MSP3421)?
Check the Pin 3 of IC919 and
related circuit of IC919.
Yes
Does the signal appear
at R505, R506?
Check the IC503 (Audio amp) and
related circuit of IC503.
Yes
Replace the speaker.
5-4 No Sound
WAVEFORMS
IC919 #3
8
No
No
No
Содержание LTM 1525
Страница 7: ...2 Product Specifications 2 4 LTM1525 LT15S13C CONFIDENTIAL ...
Страница 8: ...2 Product Specifications LTM1525 LT15S13C 2 5 CONFIDENTIAL ...
Страница 12: ...2 Product Specifications LTM1525 LT15S13C 2 9 CONFIDENTIAL s s s s s s s s 2 3 2 Supported Modes 3 ...
Страница 13: ...Memo 2 Product Specifications 2 10 LTM1525 LT15S13C CONFIDENTIAL ...
Страница 21: ...Memo 4 Alignments and Adjustments 4 6 LTM1525 LT15S13C CONFIDENTIAL ...
Страница 26: ...CONFIDENTIAL LTM1525 LT15S13C 6 1 6 Exploded View and Parts List ...
Страница 27: ...Memo 6 Exploded View Parts List 6 2 LTM1525 LT15S13C CONFIDENTIAL ...
Страница 88: ...8 Block Diagram LTM1525 LT15S13C 8 1 CONFIDENTIAL ...
Страница 89: ...8 Block Diagrams 8 2 LTM1525 LT15S13C CONFIDENTIAL ...
Страница 93: ...10 Schematic Diagrams 10 2 LTM1525 LT15S13C CONFIDENTIAL CN401 4 R354 5 ...
Страница 95: ...10 Schematic Diagrams 10 4 LTM1525 LT15S13C CONFIDENTIAL X201 6 ...
Страница 97: ...10 Schematic Diagrams 10 6 LTM1525 LT15S13C CONFIDENTIAL IC811 2 IC805 1 IC812 2 1 2 3 IC919 3 8 ...
Страница 99: ...10 Schematic Diagrams 10 8 LTM1525 LT15S13C CONFIDENTIAL CN828 16 7 ...