No. 51753
AV-14FM
16
ADJUSTMENTS
B1 POWER SUPPLY
Item
Measuring
instrument
Test point
Adjustment part
Description
Check of
B1 Power
Supply
Signal
generator
DC
Volt-meter
TP-91 (B1)
TP-E (
#
#
#
#
)
1. Receive a whole black signal.
2. Connect a DC voltmeter to TP-91(B1) and TP-E (
#
).
3. Make sure that the voltage is DC114.5
±
1.5V.
FOCUS ADJUSTMENT
Item
Measuring
instrument
Test point
Adjustment part
Description
Adjustment
of FOCUS
Signal
generator
FOCUS VR
[In HVT]
1. Receive a cross-hatch signal.
2. While watching the screen, adjust the FOCUS VR to make the
vertical and horizontal lines as fine and sharp as possible.
3. Make sure that when the screen is darkened, the lines remain in
good focus.
IF CIRCUIT ADJUSTMENT
Item
Measuring
instrument
Test point
Adjustment part
Description
●
Please use signal generator which is correct proof about the
sending frequency.
Adjustment
of VCO(CW)
Signal
generator
Remote
control unit
1. VCO
1. Receive the PAL full colour bar (210.25MHz) signal.
2. Select 1.IF from the
SERVICE MENU
.
3. Press 1 key and select
1.VCO
.
4. Select
VCO ADJUST
with
MENU
▲
/
▼
key.
5. Press
MENU
-/+ key until the colour of the characters TOO
HIGH changes blue to yellow. Then gradually press the
MENU
-/+ key until the TOO LOW changes yellow. At this time, confirm
that the value of
VCO ADJUST
is near +00.
6. Select
AFT ADJUST
with
MENU
▲
/
▼
key.
7. Press
MENU
-/+ key until the characters JUST REFERENCE
changes blue to yellow.
8. Press the
DISPLAY
key three times to return to normal screen.
VCO (CW)
***.**
MHz
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
AFT ADJUST
***(**)
***(**)
***(**)
***(**)
VCO ADJUST
***(**)
***(**)
***(**)
***(**)
FINE
DISP : EXIT
YELLOW
Do not adjust
