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AV-14F13
AV-14F33
■ ■ ■ ■ ADJUSTMENTS
B1 POWER SUPPLY
Measuring
Item
instrument
Check of
DC Voltmeter B1 (
B1 POWER
SUPPLY
IF VCO ADJUSTMENT
Measuring
Item
instrument
IF VCO
Signal
adjustment
generator
TOO HIGH
ABOVE REFERENCE
BELOW REFERENCE
TOO LOW
SYNC
:
RF AGC ADJUSTMENT
RF AGC
adjustment
No.
Setting item
60
RF AGC
FOCUS ADJUSTMENT
FOCUS
Signal
adjustment
generator
20
All manuals and user guides at all-guides.com
Test point
Adjustment item
B1
Connector
pin)
1
(TP-91)
TP-E(#)
(
B1
Connector
pin)
3
Test point
Adjustment item
CW TRANSF. (T111)
[ VCO (CW) ] mode
YELLOW
YES
EXIT BY
EXIT
IT
No.60 RF AGC
Variable
Initial setting
range
value
000～255
183
FOCUS VR
[ In HVT ]
No.52021
Description
1. Receive a black and white signal (color off). (NTSC)
2. Connect a DC voltmeter to TP-91(B1) and TP-E(#).
3. Confirm that the voltage is DC134.5V±2V.
Description
" Under normal conditions, no adjustment is required.
1. Receive a broadcast. (use channels without offset frequency).
2. Select the VCO(CW) mode from the SERVICE MENU.
3. Confirm the color change (yellow) from TOO HIGH to TOO
LOW by CW TRANSF.(T111) and SYNC : YES being shown
on the screen. Then, adjust CW TRANSF.(T111) until BELOW
REFERENCE mark turns yellow and confirm again SYNC :
YES being shown on the screen.
1. Receive a broadcast.
2. Select No.60 RF AGC of the PICTURE mode in SERVICE
MENU.
3. Press the MUTE key and turn off color.
4. With the MENU LEFT key, get noise in the screen picture. (0
side of setting value)
5. Press the MENU RIGHT key and stop when noise disappears
from the screen.
6. Change to other channels and make sure that there is no
irregularity.
7. Press the MUTE key and get color out.
1. Receive a crosshatch signal.
2. While looking at the screen, adjust FOCUS VR so that 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.
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