Table of Contents
Advertisement
AV-21DMT3/AV-21D3
AV-2135TEE/AV-2135EE
AV-21DMG3
ADJUSTMENTS
B1 POWER SUPPLY
Measuring
Item
instrument
Check of
Signal
B1 Power
gener ator
Supply
DC Volt-
meter
FOCUS ADJUSTMENT
Measuring
Item
instrument
Ad justment
Signal
of FOCUS
gener ator
IF CIRCUIT ADJUSTMENT
Measuring
Item
instrument
Ad justment
Signal
of VCO(CW)
gener ator
Remote
control unit
VCO (CW) ***.** MHz
TOO HIGH
ABOVE REFERENCE
JUST REFERENCE
BELOW REFERENCE
TOO LOW
AFT ADJUST
VCO ADJUST
FINE
DISP : EXIT
AD JUST MENT AT T H IS POINT IS USELESS
20
Test point
Ad justment part
TP-91 ( B1)
TP-E ( # # # # )
Test point
Ad justment part
FOCUS VR
[In HVT]
Test point
Ad justment part
1. VCO
YELLOW
** *(* *)
** *(* *)
** *(* *)
** *(* *)
** *(* *)
** *(* *)
** *(* *)
** *(* *)
Do no t adjust
TOO HIGH
AB OVE REFER EN CE
J US T R EFE RE NC E
BELOW R EFER EN CE
TOO LOW
AD JUST MENT POIN T
1. Input a whole black signal.
2. Connect a DC voltmeter to TP-91(B1) and TP-E ( # ).
3. Make sure that the voltage is DC116.5±2.0V.
1. Input a cross-hatch s ignal.
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 s creen is darkened, the lines remain in
good focus.
●Please us e s ignal generator which is correct proof about the
sending frequency.
1. Input the PAL full colour bar (210.25MHz) signal.
2. Enter the SERVICE MENU.
3. Select 1.IF from the SERVICE MENU.
4. Press 1 key and s elect 1.VCO.
5. Select VCO ADJUST with MENU ▲ / ▼ key.
6. 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.
7. Select AFT ADJUST with MENU ▲/▼ key.
8. Press MENU -/+ key until the characters JUST REFERENCE
changes blue to yellow.
9. Press the DISPLAY key three times to return to normal screen.
No. 52023
Description
Description
Description
Advertisement
Table of Contents
