AV-27D201
AV-32D201
!ADJUSTMENTS
B1 POWER SUPPLY
Measuring
ItemTest pointAdjustment partDescription
instrument
Check ofDC VoltmeterB1 (""""B1####1. Input the black and white signal (color off).
B1 POWERConnector2. Connect the DC voltmeter to"B1#connector"1#pin (TP-91)
SUPPLYSignal""""1####pin)and TP-E(#) (B1 connector"3#pin).
(TP-91)
generator
3. Confirm that the voltage is DC134V2V.
TP-E(#)
(""""B1####
Connector
""""3####pin)
ADJUSTMENT OF IF. VCO
Measuring
ItemTest pointAdjustment partDescription
instrument
IF VCORemoteCW TRANSF." Under normal conditions, no adjustment is required.
adjustmentcontrol unit[IF PWB]And it must not adjust without signal.
1. Receive the NTSC broadcast. (Use channels without offset
frequency).
2. Select the VCO (CW) mode from the SERVICE MENU.
3. Confirm that the color change from HIGH LEVEL to LOW
HIGH LEVEL
LEVEL by CW transf., and check the SYNC : YES .
REFERENCE LEVELYELLOW
4. Adjust until REFFERENCE LEVEL mark turns yellow.
LOW LEVEL
And then confirm that the SYNC : YES again.
SYNC : YES
ADJUSTMENT OF RF AGC
Measuring
ItemTest pointAdjustment partDescription
instrument
RF. AGCRemoteNo.55 AGC ADJ1. Receive the broadcast.
adjustmentcontrol unit2. Select No.55 AGC ADJ of the PICTURE MODE.
3. Press the MUTING key and turn off color.
4. With the MENU LEFT key, let down the value to appear the
noise on the screen picture.
5. Then increase the value not to see the noise on the screen ( at
that time, not to increase the value too much).
6. Change to other channels and make sure that there is no
irregularity.
7. Press the MUTING key and get color on.
ADJUSTMENT OF FOCUS
Measuring
ItemTest pointAdjustment partDescription
instrument
FOCUSSignalFOCUS VR1. Input the cross-hatch signal.
adjustmentgenerator[built-in HVT]2. While looking at the screen, adjust the FOCUS VR to the
vertical and horizontal lines will be clear and in fine detail.
3. Make sure that the picture is in focus even when the screen
gets darkened.
No. 5168621 |