Va Gain Adjustment - Sony HDW-750 Maintenance Manual

9-5. VA Gain Adjustment

9-5. VA Gain Adjustment
Notes
. Start this adjustment upon completion of the adjustment
"9-3. TEST OUT Level Adjustment".
. When the AD LEVEL setup value is modified, wait 1 to
2 seconds and then measure the waveform amplitude
after the waveform is stabilized.
Preparation
. OUTPUT/DCC switch (inside panel) → CAM/OFF
. WHITE BAL switch (inside panel) → PRST
. Complete the setting as shown below by using the setup
menu.
MENU : OPERATION
PAGE : 01*OUTPUT SEL
ITEM : TEST OUT SELECT → HD
MENU : PAINT
PAGE : 06*KNEE
ITEM : KNEE → OFF
MENU : SERVICE
PAGE : 03*VA ADJUST
ITEM : TEST SAW → ANALOG
Adjustment Procedure
Equipment : HD analog waveform monitor
Measurement point : TEST OUT connector (outside panel)
1. Complete the setting as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
OUTPUT SELECT → R
ITEM :
2. Complete the adjustment as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
ITEM : R AD LEVEL
Specifications : A = 700 ± 5 mV
9-6
A, B, C
3. Complete the setting as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
OUTPUT SELECT → G
ITEM :
4. Complete the adjustment as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
ITEM : G AD LEVEL
Specifications : B = 700 ± 5 mV
5. Complete the setting as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
OUTPUT SELECT → B
ITEM :
6. Complete the adjustment as shown below by using the
setup menu.
MENU : SERVICE
PAGE : 03*VA ADJUST
ITEM : B AD LEVEL
Specifications : C = 700 ± 5 mV
Setting upon Completion of Adjustment
Complete the setting as shown below by using the setup
menu.
MENU : PAINT
PAGE : 06*KNEE
ITEM : KNEE → ON
MENU : SERVICE
PAGE : 03*VA ADJUST
ITEM : TEST SAW → OFF
ITEM : OUTPUT SELECT → Y
HDW-750/750CE V1