Sony XVM-R70 Service Manual ▷ View online
11
XVM-R70
3-7. CHASSIS (LCD)
1
two tscrews
(+
P 2 x 8
)
qf
chassis (LCD)
2
screw
(+
P 2 x 8
)
3
screw
(+
P 2 x 8
)
4
two screws
(+
P 2 x 5
)
0
CN401
qa
CN403
qs
CN902
qd
CN404
LCD board
5
two screws
(+
P 2 x 5
)
8
two screws
(+
P 2 x 5
)
9
6
screw
(+
P 2 x 5
)
7
screw
(+
P 2 x 5
)
12
XVM-R70
3-8. LCD BOARD
3-9. LCD1
0
two screws
(+
P 2 x 8
)
9
two tscrews
(+
P 2 x 8
)
qa
LCD board
3
screw
(+
B 2 x 6
)
6
screw (+
B 2 x 6
)
4
lug
5
retainer (LCD)
7
retainer (LCD)
8
tirminal (LCD)
1
CN800
2
CN850
1
two screws
(+
B 2 x 6
)
3
screw
(+
B 2 x 6
)
5
screw
(+
B 2 x 6
)
2
two retainers (LCD, B)
4
retainer (LCD)
8
LCD1
6
retainer (LCD)
7
insulating sheet (LCD)
13
XVM-R70
3. For each item selected, adjust so that the adjustment value is
within the specified value range using the
R
and
r
keys on the
remote controller.
4. After adjustment, press the MENU key on the remote controller
to determine the adjustment value. Press the MENU key once
more to change to the next item.
more to change to the next item.
5. After all necessary adjustments are completed, select EXIT
using the MENU key on the remote controller and press the
INPUT key to display the MENU screen. Then, select No.7,
SOFT REST using the MENU key and determine the selection
using the INPUT key to terminate the TEST mode.
INPUT key to display the MENU screen. Then, select No.7,
SOFT REST using the MENU key and determine the selection
using the INPUT key to terminate the TEST mode.
SECTION 4
TEST MODE
Setting Method:
1. Place the POWER SELECT switch on the set into the B posi-
tion.
2. Turn power on. While holding the RESET key down, depress
the
R
key. Then release the RESET key and the
R
key in this
order.
3. TEST MODE MENU is indicated.
Terminating Method:
Select the MENU No. 7, SOFT REST using the MENU key on the
remote controller and determine the selection using the INPUT
key.
remote controller and determine the selection using the INPUT
key.
The FOR FACTORY Mode:
The FOR FACTORY mode can be used to perform 13 different
adjustment items with the remote controller.
adjustment items with the remote controller.
1. Select the MENU No. 2, FOR FACTORY using the MENU key
on the remote controller and determine the selection using the
INPUT key.
INPUT key.
2. The FOR FACTORY mode is now entered. The following items
are selected in turn by pressing the INPUT key repeatedly.
V Com
Y Gain
Black Limt
White Limt
R SUB BRT
B SUB BRT
R SUB CONT
B SUB CONT
Gamma1
Gamma2
VCO Free
PLL/V Pos
H Pos
Ver 1.1
14
XVM-R70
SECTION 5
ELECTRICAL ADJUSTMENTS
5-1. EQUIPMENT USED
The following measuring equipment are used for these electrical adjustments:
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
• Oscilloscope
• NTSC pattern generator
• Stabilized power supply
• Digital voltmeter
• Frequency counter
5-2. CONNECTION OF EQUIPMENT
Unless otherwise specified, the equipment should be connected as shown below.
5-3. SETUP FOR ADJUSTMENT
The 10-step gray scale signal from the NTSC pattern generator is used as an adjustment
signal for V COM voltage/position adjustment as well as VIDEO adjustment.
signal for V COM voltage/position adjustment as well as VIDEO adjustment.
10-step gray scale signal (with burst), 1Vp-p, 75
Ω
VIDEO OUT
(75 Ω)
NTSC pattern
generator
main board
TP507(+)
TP500(-)
TP507(+)
TP500(-)
monitor
XVM-R70
XVM-R70
connection box
XA-115
XA-115
stabilized
power supply
14.4 V
power supply
14.4 V
GND
ACC
BA
TT
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