JVC AV-27F704/BSA Service Manual page 47

Measuring
Item
instrument
V. SIZE / Signal
V. POSITION generator
(16:9)
Remote
control unit
B
[B=B]
B
Adjust
Setting item
point
D08: V. SIZE+-
B
D14: V. LIN+-
H. SIZE / Signal
H. POSITION / generator
SIDE PIN
(4:3) Remote
control unit
Setting item
AV-27F704
D03: H POSI
D15: H SIZE
D19: EWCR TOP
D21: EWCR BTM
D23: EW PARA
1-30 (No.52113)
Test point Adjustment part
[2.DEF (D)]
D08: V. SIZE+-
D14: V. LIN+-
Setting value
50mm
[AV-27F704]
60mm
[AV-32F704]
67mm
[AV-36F704]
[2.DEF (D)]
D03: H POSI
D15: H SIZE
D23: EW PARA
D19: EWCR TOP
D21: EWCR BTM
Screen size (90%)
Picture size (100%)
Initial setting value
AV-32F704 AV-36F704
20 25 22
33 31 30
12 13 8
14 13 8
36 35 37
Description
• V. SIZE / V. POSITION (4:3) adjustment should be
finished.
(1) Receive a black and white signal (color off).
(2) Select 16:9 mode with the [ASPECT] key.
(3) Confirm that the width of V. BLANKING is equal to
adjustment value (B).
(4) If the adjustment is not correct, enter the SERVICE
MENU.
(5) Then adjust the < D08 > (V. SIZE+-) and < D14 > (V.
LIN+-) to be same to adjustment value (B).
NOTE :
• When you change the VERTICAL adjustment value of
the regular mode (4:3), review the adjustment of 16:9
mode again.
• V. SIZE / V. POSITION adjustment should be finished.
(1) Receive a cross-hatch signal.
(2) Enter the SERVICE MENU.
(3) Select the < D03 > (H POSI) of the 2.DEF (D).
(4) Adjust by H. POSITION to be same size at both side.
(5) Then adjust the horizontal size of the visible screen
at both size to 90% with the < D15 > (H. SIZE).
(6) And adjust the vertical line at both side to become
linear line by < D23 > (EW PARA).
(7) Confirm the linearity of vertical line and horizontal
size.
(8) If it is necessary, readjust 1.~7.
NOTE :
• If it is not straight the vertical upper and bottom
corner line adjustment the upper and bottom corner
pin by < D19 > (EWCR TOP) and < D21 > (EWCR
BTM).