Sony XR-1750 / XR-P200 / XR-T200 Service Manual ▷ View online
– 13 –
LEVER (PINCH) ASS’Y
1
Fit shaft of the lever (Pinch) ass’y
in hole on the chassis (M) ass’y and
install the lever (pinch) ass’y.
in hole on the chassis (M) ass’y and
install the lever (pinch) ass’y.
2
two polyethylene washers
3
Install the spring
(pinch press) to shaft
(pinch press) to shaft
A
.
Set the ends of spring to
B
and
C
.
shaft
shaft
B
C
C
B
shaft
A
HOUSING
2
Install the hanger on to
two claws of the housing.
two claws of the housing.
1
Install the catch to the hanger.
7
Holder the hanger by bending the claw.
A
part
B
part
C
part
D
part
8
Holder the hanger by
bending the claw.
bending the claw.
3
Put the housing
under
under
A
part.
4
Fit claw on
B
part.
6
Fit projections on
D
part.
5
Fit projections on
C
part.
hanger
– 14 –
ARM (SUCTION)
2
Move the arm (suction) in the arrow
direction and fit on projection.
direction and fit on projection.
1
Fit the arm (suction) on the shaft.
projection
1
Fit the lever (LDG-A)
on shaft
on shaft
A
–
C
and install it.
shaft
A
shaft
B
shaft
C
3
two type-E stop ring 2.0
2
Fit the lever (LDG-B)
on shafts
on shafts
A
and
B
and
install.
shaft
A
shaft
B
LEVER (LDG-A) / (LDG-B)
– 15 –
GEAR (LDG-FT)
2
guide (C)
1
three claws
GUIDE (C)
4
Align hole in the gear (LDG-D) with
¢
mark on the lever (LDG-A).
gear (LDG-FB)
hole
gear (LDG-D)
gear (LDG-A)
3
Move the lever (LDG-B)
in the arrow direction.
in the arrow direction.
1
gear (LDG-A)
2
tension spring (lever LDG)
5
gear (LDG-FT)
6
polyethylene washer
– 16 –
FM RF signal
generator
set
digital voltmeter
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head
pinch roller
rubber belt
capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
•
Torque Measurement
See the adjustment location from on page 17 for the
adjustment.
adjustment.
0 dB=0.775 V
TAPE DECK SECTION
Speed checker
Frequency counter
–1.5 to +2.5%
2,955 to 3,075 Hz
Specification: Constant speed
Adjustment Location: See page 17.
set
+
–
speed checker
or
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
10 k
Ω
LINE OUT
Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
1. Put the set into the FWD PB mode.
0 dB=0.775 V
TAPE DECK SECTION
Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
1. Put the set into the FWD PB mode.
TUNER SECTION
FM S Meter Adjustment
Setting:
SOURCE button
: FM
FREQUENCY SELECT switch : 9 k (E, Australian model)
0 dB=1 µV
antenna jack (J1)
0.01 µF
TU1 pin
!•
Carrier frequency : 97.9 MHz (US model)
: 98.0 MHz (E, Australian model)
Output level
: 30 dB (31.6 µV)
Mode
: mono
Modulation
: 1 kHz, 75 kHz deviation
Procedure:
1. Tune the 97.9 MHz (US model) or 98.0 MHz (E, Australian
1. Tune the 97.9 MHz (US model) or 98.0 MHz (E, Australian
model).
2. Adjust RV1 on TU1 so that the digital voltmeter reading is
3.1 V.
Adjustment Location: See page 17.
Mode
Torqu Meter
Meter Reading
Forward
CQ-403A
more than 60 g
Reverse
CQ-403R
(more than 2.12 oz)
•
Tape Tension Measurement
Mode
Torqu Meter
Meter Reading
Forward
CQ-102C
35–65 g•cm
(0.49–0.90 oz•inch)
Forward
CQ-102C
0.5–5.0 g•cm
Back Tension
(0.01–0.07 oz•inch)
Reverse
CQ-102RC
35–65 g•cm
(0.49–0.90 oz•inch)
Reverse
CQ-102RC
0.5–5.0 g•cm
Back Tension
(0.01–0.07 oz•inch)
FF, REW
CQ-201B
60–200 g•cm
(0.83–2.78 oz•inch)
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