Adjustment - Sanyo DSR-M814 Service Manual

3. ADJUSTMENT

3-1. CH1 INPUT SIGNAL LEVEL ADJUSTMENT
Measuring Point Measuring Equipment
TP131 OSCILLOSCOPE
(CP-1 board)
Adj. Location
VR131 (CP-1 board)
1. Input a color bar signal containing 100% white to the CH1
input terminal.
2. Connect an oscilloscope to the TP131.
3. Use VR131 to adjust until the 100% white level from the
sync chip for the Y signal is 1.10 ± 0.04 Vp-p.
1.10 ±
0.04
Vp-p
3-2. OUTPUT SIGNAL LEVEL ADJUSTMENT
Measuring Point Measuring Equipment
MONITOR OUT OSCILLOSCOPE
Adj. Location
VR105 (CP-1 board)
1. Input a color bar signal containing 100% white to the CH1
input terminal.
2. Select "CH1" and switch to full screen mode.
3. Connect a 75 Ω termination to the MONITOR OUT
connector and connect an oscilloscope.
4. Use VR105 to adjust until the 100% white level from the
sync chip for the Y signal is 1.00 ± 0.04 Vp-p.
1.00 ±
0.04
Vp-p
Condition
POWER ON
E-E Mode
Adj. Value
1.10 V ± 0.04 V p-p
Condition
POWER ON
E-E Mode
Adj. Value
1.00 V ± 0.04 V p-p
3-3. CH2 INPUT SIGNAL LEVEL ADJUSTMENT
Measuring Point Measuring Equipment
OSCILLOSCOPE
MONITOR OUT
Adj. Location
VR132 (CP-1 board)
1. Input a color bar signal containing 100% white to the CH2
input terminal.
2. Select "CH2" and switch to full screen mode.
3. Connect a 75 Ω termination to the MONITOR OUT
connector and connect an oscilloscope.
4. Use VR132 to adjust until the 100% white level from the
sync chip for the Y signal is 1.00 ± 0.04 Vp-p.
1.00 ±
0.04
Vp-p
3-4. CH3 INPUT SIGNAL LEVEL ADJUSTMENT
Measuring Point Measuring Equipment
OSCILLOSCOPE
MONITOR OUT
Adj. Location
VR133 (CP-1 board)
1. Input a color bar signal containing 100% white to the CH3
input terminal.
2. Select "CH3" and switch to full screen mode.
3. Connect a 75 Ω termination to the MONITOR OUT
connector and connect an oscilloscope.
4. Use VR133 to adjust until the 100% white level from the
sync chip for the Y signal is 1.00 ± 0.04 Vp-p.
1.00 ±
0.04
Vp-p
− 8 −
Condition
POWER ON
E-E Mode
Adj. Value
1.00 V ± 0.04 V p-p
Condition
POWER ON
E-E Mode
Adj. Value
1.00 V ± 0.04 V p-p