Samsung UE D7000L Series, Service Manual

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4-24
4. Troubleshooting
No Sound (1.Speaker 2.Monitor_out, 3.Optical)
„
Genoa-P
N
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
Symptom
Video is normal but there is no sound..
-
Major
checkpoints
When the speaker connectors are disconnected or damaged.
-
When the sound processing part of the Main Board is not functioning.
-
Speaker defect..
-
Caution Make sure to disconnect the power before working on the PD board.
Diagnostics
Check CN404, CN402, CN506_UBA.
Change the Main Assy.
Check IC302, IC1202.
Change the Main Assy.
Check IC302, IC1202.
Change the Main Assy.
No
No
No
Yes
Yes
Yes
Check the source and check the
connection of sound cable
(Comp/PC/DVI to HDMI) ?
Replace speaker ?
Input the sound source properly.
Please, Contact Tech support.
No
No
Yes
Check the signal at input of Main board?
COMP1 R : C414_L : C412
AV, R : C506_L : C508
PC, DVI R : C409_L : C410
1. Check the Speaker sound data at ?
tp R+/-
tp L+/-
2. Check the Monitor out sound data at ?
tp monitor_R
tp monitor_L
3. Does the SODIF OUT sound data
appear at ?
TP SPDIF_OUT
4. Check the Woofer sound data at ?
tp WF+
tp WF-
Check the I2C DATA between
the Audio IC’s ?
Pin #1 of IC302 : MCLK
Pin #5 of IC302 : Data
2
1
Caution Make sure to disconnect the power before working on the IP board.