Service manual

3-13
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A/V Out port
No video screen
signal
Check J118.5 -> F114 -> R467 -> C742 -> C741->R746->
R737->Q709->L709->R723->Q706->R728 signal.
Check whether Q703.base is Low(0V) (Mute Off)
Check whether L112 terminal is +9V
System error
Check Front Display format LED
Check F118 -> R478 -> C746->IC165.7->C744->R748->
R739->Q711->L711->R725->Q708 terminal C_OUT
signal.
Check whether L708 has bad soldering
Check whether L708(6.8uH) has bad soldering
Check whether Q704.base and Q705.base are Low(0V)
(Mute Off)
Check whether the front display format LED is 480i (OFF)
Check F117 -> R477 -> C747->IC165.1->C743->R747->
R738->Q710->L710->R724->Q707->R729 terminal
Y_OUT signal. Check whether L708 has bad soldering
S-video port
No signal
RGB/YPbPr
Normal output?
No S-video screen color
RGB/YPbPr
Normal output
System debugging
S-video
No screen signal
A/V Out port ok