BenQ VM2221 Product Service Manual page 112

11. Speaker function PC or Pattern
examination
Generator
control 1. PC or Pattern
12.remote
function testing
Generator
2.
Generator
3. DVD or VCD
4. VG-848
5. FLUKE 54200
PC
DDC function
13.
checking Generator
CR value PC or Pattern
14.
adjustment Generator
F
irst APS setup
15.
Visual Cleaning
TV Signal
or Pattern D620 DDC Test Card
31
1. press VOL▲▼Key to VOLUME .
2. adjust ▲ ▼Key to examine whether
controlled value.
3. Check if the volume out of true.
1. Check if in any mode ,each function is
normal.
3. DDC Tester direct through signal line to
get into machine EEPROM to save and
take data.
4. to confirm data whether is right
1. Make BRIGHTNESS and CONTAST shift
to the mix and black picture，to measure
the mix brightness.
2. Make BRIGHTNESS and CONTAST shift
to the mix and white picture，to measure
the mix brightness.
.3. Also figure out that CR value
U
sing the remote control to press Menu
+55800