No. 51968
AV32T25EKS / AV32R25EKS
AV32T55EKS / AV32R250EKS
AV32T25EIS
19
ADJUSTMENTS
CHECK ITEM
Item
Measuring
instrument
Test point
Ad justment part
Description
B1 POWER
SUPPLY
Check
Signal
generator
DC voltmeter
Remote
control unit
TP-91(B1)
TP-E(
"
"
"
"
)
[X connector
on POWER
DEF PWB]
1. Receive a any broadcast.
2. Push the “ZOOM” key and s elect the FULL mode.
3. Select 2.V/C from the SERVICE MENU.
4. Select 1. CUT OFF with Function UP/DOW N k ey.
5. Show one horizontal line with the 1 key.
6. Turn the SCREEN VR, the whole blac k screen display.
7. Connect a DC voltmeter to TP-91(B1) and TP-E(
"
).
8. Make sure that the voltage is DC143.0V
±
2.0V.
9. Readjust the SCREEN VR to appear the horizontal line faintly,
and cancel the horizontal line to press the 2 key.
HIGH
VOLTAGE
Check
Signal
generator
DC volunteer
Remote
control unit
CRT anode
Chassis GND
1. Receive a any broadcast.
2. Push the “ZOOM” key and s elect the FULL mode.
3. Select 2.V/C from the SERVICE MENU.
4. Select 1.CUT OFF with Function UP/DOWN key.
5. Show one horizontal line with the 1 k ey.
6. Turn the SCREEN VR, the whole blac k screen display.
7. Connect a DC voltmeter to CRT ANODE and chassis GND.
8. Make sure that the voltage is DC 31.0kV .
9. Readjust the SCREEN VR to appear the horizontal line faintly,
and c onnect the horizontal line to press 2 key.
FOCUS ADJUSTMENT
Item
Measuring
instrument
Test point
Ad justment part
Description
Ad justment of
FOCUS
Signal
generator
FOCUS 1
FOCUS 2
[In FBT]
1. Receive a cross-hatch signal.
2. Push the “ZOOM” key and s elect the FULL mode.
3. By turning the FOCUS2 VR, and adjust the picture s o that the
“ “ part vertical line may become thinnest.
4. By turning the FOCUS1 VR, and adjust the picture s o that the
3rd horizontal line from the upper may become uniform at the
line c enter and its periphery.
5. Carry out adjustment by repeating the steps 3 and 4 above.
6. Make sure that when the screen is darkened, the lines remain
in good focus.
.
+1kV
-1.5kV
FOCUS1(F1)
SCREEN1(S1)
FOCUS2(F2)
FOCUS 2
F
O
CUS
1
www.freeservicemanuals.info
26/1/2014
Global electronic heritage manuals