JVC AV-36D503/Y Service Manual page 23

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ADJUSTMENTS
BASIC ADJUSTMENT
Measuring
Item
instrument
Check of
DC Voltmeter 1 : TP-91
B1 POWER
SUPPLY
MAIN VCO
Signal
adjustment
gener ator
Remote
control unit
TUNER
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC
SUB VCO
Remote
adjustment
control unit
Only for
AV-36D503
TUNER
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC
Test point
Ad justment part
3 : TP-E(#)
B1 connector
VCO (MAIN)
[SERVICE MENU]
CW TRANSF.
[MAIN PWB]
MAIN
GREEN
NO
VCO (SUB)
[SERVICE MENU]
SUB CW TRANSF.
[PIP PWB]
SUB
GREEN
NO
No. 51948
Description
1. Receive the blac k and white signal. (color off)
2. Connect the DC voltmeter to B1 connector 1 pin (TP-91) and
TP-E(#).
3. Confirm that the voltage is DC134V±2V.
" Under normal conditions , no adjustment is required. And it must
not adjust without signal.
1. Receive the NTSC broadc ast.
2. Select the 10 VCO mode from the SERVICE MENU.
3. It checks that turn the CW TRANSF. and the character of
"HIGH LEVEL" changes the color.
4. Next, it chec k that turn the CW TRANSF. on the c ontrary and
the color of "LOW LEVEL" changed.
5. At this time, it checks that "SYNC" is "YES".
6. Turn the CW TRANSF. and it is made for the c harac ter of
"REFERENCE LEVEL" to become green. Again, it checks that
"SYNC" is "YES".
" This adjustment is only for AV-36D503.
" Under normal conditions , no adjustment is required. And it must
not adjust without signal.
1. Receive the NTSC broadc ast.
2. Push the PIP key on the remote control unit. And display any
broadcast program in the PIP screen that difference from MAIN
screen.
3. Select the 10 VCO mode and switch the SUB mode by pressing
the CURSOR
/
key.
4. It checks that turn the SUB CW TRANSF. and the character of
"HIGH LEVEL" changes the color.
5. Next, it check that turn the SUB CW TRANSF. on the contrary
and the color of "LOW LEVEL" changed.
6. At this time, it checks that "SYNC" is "YES".
7. Turn the SUB CW TRANSF. and it is made for the character of
"REFERENCE LEVEL" to become green. Again, it checks that
"SYNC" is "YES".
AV-36D503
AV-36D303
AV-36D203
23

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