When Playing Disc, No Audio Output; Tuner Audio Output; Optical / Digital Output - Zenith XBR411 Manual

5. When playing DISC, no audio output

NO
IC802-14 : HIGH
DAC RESET status
YES
NO
IC802-11 I2C signal
normal
YES
Check IC802 power
And Other circuits
6. No TUNER audio output
NO
Audio output even
When playing DISC
YES
NO
PN304-19~22 Check
audio signals
YES
NO
IC801 – 1, 7 Check
audio signals
YES
NO
IC802-14 Check
High?
YES
Check IC802 power
And Other circuits
Check AV_RST1,
power and other cir-
Check R154, R155,
R851, R852
Check FFC Cable
and VCR part
Check FFC Cable
and VCR part
Check IC801 power
and other circuits
Check AV_RST1 and
power, other circuits
3-65
7. No OPTICAL / DIGITAL output
NO NO
PN303-1 signal
normal
YES YES
Check FFC Cable
Signal flow
Check VCR PART