JVC AV-21L91-BK Service Manual page 33

DEFLECTION CIRCUIT ADJUSTMENT [AV-25L91-BK, AV-29L91-BK]
The setting (adjustment) using the remote control unit is made on the basis of the initial setting values.
The setting values which adjust the screen to the optimum condition can be different from the initial setting values.
Note:
Proceed to the following this adjustment after having completed the adjustments of SUB BRIGHT and SUB CONT.
[SUB MENU 3. DEF]
Setting
(Adjustment) Variablerange
item
1. VER. SLOPE –31 — +31
2. VER. HEIGHT –31 — +31
3. VER. POSITION –31 — +31
4. VER. SCURVE –31 — +31
5. HOR. POSITION –31 — +31
6. HOR. WIDTH –31 — +31
7. EW-PIN –31 — +31
8. EW-TRAPEZ –31 — +31
9. UP CORNER –31 — +31
10. DW CORNER –31 — +31
11. HOR. PARALL –31 — +31
12. HOR. BOW –31 — +31
13. V.ZOOM –31 — +31
[fv : 50Hz mode]
Measuring
Item
instrument
Adjustment Signal
generator
of
VER. SLOPE
Remote
control unit
4:3
50Hz
25" 29" 25"
+6 +3 –1
+31 +31 +30
–2 +2 0
–21 –21 –2
+6 –4 +6
+10 +11 +2
+25 –11 –1
–4 0 0
–4 –25 0
–4 –25 0
+3 0 0
+1 0 0
+1 –1 +2
Test point Adjustment part
1. VER. SLOPE
A
Blanking
line
B
No. 51898
Initial setting value
COMPRESS (16:9)
60Hz 50Hz
29" 25" 29"
0 +6 —
0 –25 –29
–1 –2 —
0 –21 —
+7 +6 —
–1 +10 —
–1 –32 –13
0 –4 —
0 –1 0
0 –2 0
0 +3 —
0 +1 —
–1 +11 +14
1. Receive a PAL circle pattern signal of vertical frequency 50Hz.
2. Select 3. DEF from the SERVICE MENU.
3. Select 1. VER. SLOPE with the MENU &/^ key.
4. Set the initial setting value of 1. VER. SLOPE with the MENU –/+
key.
5. Adjust 1. VER. SLOPE to make "A = B" with the MENU –/+ key.
(to be continued)
AV-25L91
AV-29L91
COMPONENT
60Hz
(50Hz/60Hz)
25" 29"
–1 —
–25 –24
0 —
–2 —
+6 —
+2 —
–32 –12
0 —
–24 0
+1 0
00 —
0 —
+10 +6
Description
DVD
—
—
—
—
+7
—
—
—
—
—
—
—
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