BenQ Q7T4-FP71G, Service Manual

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Q7T4-FP71G LCD Monitor Service Guide
Engineering Specification
4
Confidential
Item Condition Spec OK N.A Remark
Input Voltage range Universal input full range 90~264VAC /47~63Hz
√
Input Current range 90 ~ 264VAC < 2.0 Arms
√
Power Consumption
Normal “On” operation < 40 W
√
LED: Green
DPMS
DPMS “Off” state
< 1 W in power preferred
mode, 115V
< 2 W, 230V
√
LED: Amber
Inrush Current
110 VAC
220 VAC < 30 A (peak)
< 60 A (peak)
√
Cold-start
Earth Leakage Current 264 VAC/50Hz < 3.5 mA
√
Hi-Pot
1. 1500VAC, 1 sec
2. Ground test: 30A, 1sec Without damage
< 0.1 ohm
√
(on-line test)
(in-lab test)
Power Line Transient
IEC1000-4-4 1KV
√
IEC1000-4-5 (Surge)
Common: 2KV,
Differential: 1KV
√
CCFL operation range
90 ~ 264VAC 3 mA ~8mA
√
Panel Spec.
3.0 ~ 8.0mA rms
CCFL Frequency 90 ~ 264VAC 40KHz ~ 80KHz
√
Panel Spec.
40KHz ~ 80KHz
Power cord
Color: Black
Length: 1500
+/- 5
0 mm
√
2.2 Signal interface
Item Condition Spec OK N.A Remark
15-pin D-Sub
Color: Black
Length: 1500
+/-
30 mm
√
Signal Cable
24-pin DVI-D
Color: Black
Length: 2000
+/-
50 mm
√
15-pin D-sub connector
See Note-1
√
For 15-pin D-sub
Pin assignment
24-pin DVI-D connector
See Note-2
√
For 24-pin DVI-D
Signal type
Separate analog R/G/B
√
For 15-pin D-sub
Level
700 mV (peak to peak)
√
Video input
Impedance
75 Ohms +/- 1.5 Ohms
√
Signal type
Separate H/V-sync
Composite H/V-sync
(Positive/Negative)
√
For 15-pin D-sub
Level
Logic High: 2.4V ~ 5.5V
Logic Low: 0V ~ 0.5V
(TTL level)
√
Refer to VESA VSIS
Standard V1R1
Impedance Minimum 2.2K
Ω(pull down)
√
10K
Ω
for application
Sync input
Sync Pulse Width (SPW)
0.7
μ
s < H-SPW
1H < V-SPW
√
Note-1: The pin assignment of 15-pin D-sub connector is as below,
1 5
6 10
11 15