Sony DNW-A100 Maintenance Manual page 74

3-7. Video System Alignmnet (VPR-17 Board)
3-7-4. Component Video Output Adjustment (Standard System)
1. Output Level Adjustment
1. To enter the maintenance mode, press S1101(G-1) on
the SS-63 board.
2. In C21 : VIDEO TEST SG of the maintenance mode,
select the test signal "100% Color Bars".
3. To exit the C2 : AUDIO/VIDEO CHECK, press the
MENU button two times.
4. Enter A20 : VPR VR of the maintenance mode.
Check (Adjustment)
5. Check each specified part's level of VIDEO OUTPUT
COMPONENT outputs on the waveform monitor.
If the specification is not satisfied, perform the
adjustment.
Output Adj. point (A20 : VPR VR)
Y Y OUTPUT LEVEL
R-Y R-Y OUTPUT LEVEL
B-Y B-Y OUTPUT LEVEL
COMPONENT Y
A
COMPONENT R-Y
B
6. To exit A20 : VPR VR, press the MENU button once.
3-38
Specification
A = 700 ± 7 mV
B = 700 ± 7 mV p-p
C = 700 ±7 mV p-p
COMPONENT B-Y
C
Data save (Store the adjusted data)
When the adjustment was not performed in step 5, skip
over steps 7 and 8.
7. Enter A2F : NV-RAM CONTROL, then execute
"SAVE ALL ADJUST DATA".
. Message "Save Complete" is displayed on the video
monitor when this data save is completed normally.
n
When loading the previous data without save the
current adjusted data, execute "ALL DATA PREVI-
OUS".
8. To exit A2F : NV-RAM CONTROL, press the MENU
button once.
2. Output Phase Check
1. To exit the A2 : AUDIO/VIDEO ADJUST, press the
MENU button once.
2. In C21 : VIDEO TEST SG of the maintenance mode,
select the test signal "Bowtie".
3. To exit the C2 : AUDIO/VIDEO CHECK, press the
MENU button two times.
4. Set the analog component waveform monitor to the
BOWTIE mode.
5. Check the deviations A and B between each center
marker and bowtie dip point of CH-1/CH-2 (Y/B-Y)
and CH-1/CH-3 (Y/R-Y).
Specifications: A = 0 ± 10 ns
B = 0 ± 10 ns
Center markers
CH-1/CH-2
A
6. To exit the maintenance mode, press the MENU
button two times.
CH-1/CH-3
B
DNW-A100/A50/A45
DNW-A100P/A50P/A45P