JVC AV-56WP30 Service Manual page 42

AV-56WP30
Measuring
Item
Instrument
WHITE BALANCE Signal
gener ator
(Low Light)
adjustment
Oscilloscope
Remote
control unit
GBK
TP-E
CRT SOCKET PWB
Setting
item
LOW-BAL LOW-BAL LOW-BAL LOW-BAL
(***)
R. CUTOFF
setting
value
Press 0 key then appear
Setting item
NT SC
S14 232
S16 040
S18 048
S20 000
S21 001
42
Test point Ad justment Item
TP-R S14: R CUTOFF
[R CRT S16: G CUTOFF
SOCKET PWB] S18: B CUTOFF
S20 : R CUTOFF
TP-G
[G CRT
S21 : B CUTOFF
SOCKET PWB]
TP-B
[B CRT
R SCREEN VR
SOCKET PWB]
G SCREEN VR
B SCREEN VR
[FOCUS PACK]
RGK
E
TP-R
TP-G
TP-B
(***) (***)
G. cutoff B. cutoff
setting value setting value
Setting value
480i
232
040
041
000
001
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.
SW
5. Adjust S16 ＜G CUTOFF ＞ to mach 0% DC level to
SW
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 glimmer +3% 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.
1080i
232
040
050
R CUT OFF
000
001
R CUT OFF
No. 52007
Description
REM OTE CO NTROL UNIT
EXIT
1 2 3
B CUTOF F
G CUT OFF
4 5 6
B CUTOF F
G CUT OFF
7 8 9
OSD O N/OFF
0