HP W1907 Service Manual

4.6 Abnormal plug and play operation
Confirm the host computer supplies DDC/CI mode.
OK
NG
Failure Point
The host machine is not communicated in DDC/CI
mode.
Check the voltage on I304 pin 8 that is DC 5 V.
OK
NG
Failure Point
1) Printed wire broke between I304 pinv8, D307 and
P302 pin 9.
2) D307 is failure.
Check the output signal of I2C data / clk on I304 pin 5,
6.
OK
NG
Failure Point
I304 is failure.
Check the voltage on P302 pin 9 that is DC 5 V.
OK
NG
Failure Point
TheVGAvideocableisfailure.
Check the signals if is high level on P302 pin 12, 15
that is I2C data / clk signal.
OK
NG
Failure Point
TheVGAvideocableisfailure.
Failure Point
1) Printed wire broke between I306 pin 65, 64, I304 pin
5, 6 and P302 pin 12, 15.
2) I306 maybe failure.
3) R328, R329 is open.
4) C331, C332, R326, R327 is short.
4.6.1 Abnormal plug and play operation for VGA
Page 18
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022-83715667

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