HP W1907 Service Manual

Check the audio signal input from the audio
source.
OK
NG
Failure Point
1) No audio signal from the audio source.
2) Audio cable is failure.
Check audio signal input of the I310 TPA6021A4
pin4,5,7,8.
Failure Point
1) Printed wire broke between P309 and I310 pin 4, 5,
7, 8.
2) FB318, FB319, R386, R387, C393, C394, C397,
C398 is open.
3) C395, C396, R388, R389 is short.
NG
OK
Check I310 audio power +5V.
Failure Point
1) Power board have no output 5V on P301 pin 7, 8.
2) Power board is failure.
3) Printed wire broke between P301 pin 7, 8 and I310
pin 3, 6, 9.
4) FB321 is open.
5) C301~C303, C401~C404 is short.
6) FB320, FB322 is open.
NG
OK
4.9 Audio No Signal Output
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HP W1907 Specifications

General

Pixel pitch	0.285 x 0.285 mm
Display diagonal	19 \
Display resolution	1440 x 900 pixels
Viewable size diagonal	483 mm
Contrast ratio (typical)	1000:1
Digital vertical frequency	55 - 75 Hz
Digital horizontal frequency	30 - 83 kHz
Power requirements	100-240VAC
HDCP	Yes
Certification	FCC Class B
Product color	Silver
Country of origin	China
Market positioning	-
Panel mounting interface	100 x 100 mm
Power consumption (standby)	2 W
Power consumption (typical)	49 W
Storage temperature (T-T)	-20 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	15 - 90 %
Sustainability certificates	ENERGY STAR

Weight and Dimensions

Depth (without stand)	182 mm
Width (without stand)	452 mm
Height (without stand)	378 mm
Weight (without stand)	5000 g