JVS AV-32D203, Руководство по обслуживанию

Страница: 23 / 89

No. 51947
AV-32D503
AV-32D303
AV-32D203
23
ADJUSTMENTS
BASIC ADJUSTMENT
Item
Measuring
instrument
Test point Ad justment part Description
Check of
B1 power
supply DC Voltmeter 1 : TP-91
3 : TP-E(
#
)
B1 connector
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.
MAIN VCO
adjustment Remote
control unit VCO (MAIN)
[SERVICE MENU]
CW TRANSF.
[MAIN PWB]
"
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”.
SUB VCO
adjustment Remote
control unit VCO (SUB)
[SERVICE MENU]
SUB CW TRANSF.
[PIP PWB]
" 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”.
TUNER MAIN
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC NO
GREEN
TUNER SUB
HIGH LEVEL
REFERENCE LEVEL
LOW LEVEL
SYNC NO
Only for
AV-32D503
GREEN