Philips 40PFL4707/F7 - Troubleshooting and Support; Frequently Asked Questions (FAQ); Troubleshooting Common Issues

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2. Video/Audio Block Diagram
PL12.3ABLVA
AUDIO(L)-IN AUDIO(R)-IN
JK3701
DIGITAL MAIN CBA UNIT
IC3801 (AUDIO AMP)
DIGITAL AUDIO-OUT (COAXIAL)
Q3701
BUFFER
Q3801
AUDIO(L)-IN
AUDIO(R)-IN
SPDIF
AUDIO-MUTE
TO SYSTEM CONTROL BLOCK DIAGRAM
JK3703 HEADPHONE JACK
SP3802 SPEAKER R-CH
CN3801
SP3801 SPEAKER L-CH
AMP(L)-OUT
AMP(R)-OUT
3GND 4SP(R) 2GND 1SP(L)
COMPONENT -Y/VIDEO-IN COMPONENT -Pb-IN COMPONENT -Pr-IN
JK3702
DIF-OUT1
COMP-DET
DIF-OUT2
IF-AGC
COM-VIDEO-Y/VIDEO-IN
COM-VIDEO-Pr-IN
COM-VIDEO-Pb-IN
TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM
JK3001 PC-RGB IN
Q3301
IC3013 IC3014
1 2 3
13 14 15
12
VGA-R-IN
VGA-G-IN
VGA-B-IN
VGA-HSYNC
VGA-VSYNC
VGA-SCL
VGA-SDA
TU3901
DIF-OUT1
6
DIF-OUT2
7
(TUNER UNIT)
IF-AGC
5
BUFFER GATE
BUFFER
Q3302
BUFFER
BUFFER GATE
VIDEO SIGNAL
AUDIO SIGNAL
34 17 32
CONTROL LOGIC
DRIVE PWM
19DRIVE PWM
P-ON+5V
Q3803
Q3802
11,12
39,40
BACKLIGHT-SW