Sanyo VPC-C5 Service Manual page 17

3-6. Adjust Specifications
[CP1 board (Side B)]
Note:
1. Oscillation frequency adjustment is necessary to repair in
the CP1 board and replace the parts.
2. Carry out the oscillation frequency adjustment with LCD
through image mode.
Preparation:
1. Remove the cabinet left and the sheild CP1, and the side B
of CP1 board can be seen.
2. Insert the SD card.
3. Set the main switch to the REC.
4. Press the power button, and comfirm that the through im-
age from CCD can be seen in the LCD.
1. IC501 Oscillation Frequency Adjustment
Measuring Point CL518
Measuring Equipment Frequency counter
ADJ. Location VR501
797.7 ± 1 kHz
ADJ. Value
Adjustment method:
1. Adjust with VR501 to 797.7 ± 1 kHz.
TP971
CL518
VR501
– 17 –
2. Iris Adjustment
TP971
Measuring Point
Measuring Equipment Digital voltmeter
Calibration Upload
AWB
Firmware
Focus
RGB Gain
Data
UV Matrix
Cal Mode
Initialize
OK
VCO
EVF
H AFC
Cal Data
LCD Type
OK
USB storage
VID
Get Set Serial
PID
Set
Backrush pulse :
Get
Hall element calibration
GAIN OFFSET
ROUTH : + 4 ROUTH :
FINE : + 3 FINE :
1. Double-click on the DscCalDi.exe. (When setting Monitor in
the LCD "Test", LCD monitor can be seen.)
Measuring point is TP971.
2. Click the Hall Cal.
3. Repeat the third time "Open" and "Close" in the APERTURE.
4. Select "Open" in the APERTURE.
5. Adjust with GAIN to 3.00 V ± 0.01 V.
GAIN (ROUGH): "+1" → +100 mV, "–1" → –100 mV
GAIN (FINE): "+1" → +10 mV, "–1" → –10 mV
6. Select "Close" in the APERTURE.
7. Approximately half of the offset from 1 V is adjusted using
GAIN. For example for 1.2 V, GAIN can be used to adjust so
that (1.2-1.0) / 2 + 1.0 = 1.1 V.
GAIN (ROUGH): "+1" → –100 mV, "–1" → +100 mV
GAIN (FINE): "+1" → –10 mV, "–1" → +10 mV
8. Adjust with OFFSET to 1.00 V ± 0.01 V.
OFFSET (ROUGH): "+1" → +100 mV, "–1" → –100 mV
OFFSET (FINE): "+1" → +10 mV, "–1" → –10 mV
9. Select "Open" in the APERTURE. Check that the voltage is
3.00 V ± 0.03 V.
If the values are different, readjust from step 5.
10. Select "Close" in the APERTURE. Check that the voltage
is 1.00 V ± 0.03 V.
11. Click the OK.
Note:
If the GAIN and OFFSET values are changed, the voltage val-
ues at OPEN and CLOSE will change, so be sure to check that
the OPEN and CLOSE values are within the standard range.
LCD
RGB Odd RGB Even
VCOMPP(LOW)
VCOMDC VCOMPP(HI)
Tint Phase
Hall Cal.
Test
Setting
Language
Set
Video Mode
Set Rev.
Set
Factory Code
Set
APERTURE
Open
– 4
Close
+ 3
OK
x