JVC AV-56WP30, Руководство по обслуживанию

Страница: 42 / 122

No. 52007
AV-56WP30
42
Item
Measuring
Instrument
Test point Ad justment Item Description
WHITE BALANCE
(Low Light)
adjustment Signal
generator
Oscilloscope
Remote
control unit
TP-R
[R CRT
SOCKET PWB]
TP-G
[G CRT
SOCKET PWB]
TP-B
[B CRT
SOCKET PWB]
S14: R CUTOFF
S16: G CUTOFF
S18: B CUTOFF
S20 : R CUTOFF
SW
S21 : B CUTOFF
SW
R SCREEN VR
G SCREEN VR
B SCREEN VR
[FOCUS PACK]
1. Receive NTSC black & white signal (include 0%).
2. Select the STANDARD mode for the VIDEO STATUS.
3. Select the COLOR TEMP in set at the LOW mode.
4. Connect the osc illosc ope to TP-G.
5. Adjust S16
＜ G CUTOFF ＞ to mach 0% DC level to
180V.
6. Press the MUTING key to memorize the set value.
NOTE : Adjusting S16, c hange the only up. If DC level is
low, adjust S03 <SUB BRIGHT>.
7. Input 480i c omponent black level pattern signal from
COMPONENT VIDEO terminal and input the value
adjusted at NTSC to S16
＜ G CUTOFF ＞ .
8. Press the MUTING key and memorize the s et values.
9. Input 1080I component blac k level pattern signal from
COMPONENT VIDEO terminal and input the value
adjusted at NTSC to S16
＜
G CUTOFF
＞
.
10. Press the MUTING key and memorize the s et values.
11. In case of TP-R, TP-B, repeat step 4
～ 6 above.
If the value of S14 or S18 is maximum or minimum,
change S20
＜
R CUTOFF SW
＞
or S21
＜
B CUTOFF
SW
＞
and then adjust S14 or S18.
12. Adjust each R / G / B s creen VR and g3% point
of eac h R / G / B on the screen.
13. Receive the NT SC blac k & white pattern signal (c olor
off).
14. Select the STANDARD mode for the VIDEO STATUS.
15. Select that COLOR T EMP is set at the LOW mode.
16. Select the 3.LOW LIGHT mode from the SERVICE
MENU.
17. Press the 0 k ey, then setting values appear.
18. Inc rease the bright level to confirm low-light with
FUNCTION key ( ).
19. Adjust using 4 / 7(R CUTOFF), 6 / 9 (B CUTOFF) k ey of
number key so that a black portion may become black.
20. Press the MUTING key and memorize the s et values.
21. Input 480i component blac k & white pattern signal from
COMPONENT VIDEO terminal.
22. Repeat steps 16
～
20 above.
23. Input 1080i component black & white s ignal from
COMPONENT VIDEO terminal.
24. Repeat steps 16
～
20 above.
CRT SOCKET PWB
TP-E
GBK RGK
E
TP-R
TP-G
TP-B
1 2 3
4 5 6
7 8 9
R CUTOFF B CUTOFF
EXIT
B CUTOFF R CUTOFF
REM OTE CO NTROL UNIT
G CUTOFF
G CUTOFF
0
OSD ON/OFF
Setting value
Setting item
NT SC 480i 1080i
S14 232 232 232
S16 040 040 040
S18 048 041 050
S20 000 000 000
S21 001 001 001
LOW-BAL
LOW-BAL LOW-BAL
LOW-BAL
(***) (***) (***)
Setting
item
G. cutoff
setting value B. cutoff
setting value
R. CUTOFF
setting
value
Press 0 key then appear