Read Sony XR-C453RDS Service Manual online
– 14 –
SECTION 4
MECHANICAL ADJUSTMENTS
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and MW Auto Scan/Stop Level adjustments can
be performed easier than it in ordinary procedure.
Scan/Stop Level and MW Auto Scan/Stop Level adjustments can
be performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Set the “power select” switch (S801) is “A” position.
2. Turn ON the regulated power supply. (All LEDs on the set lights
1. Set the “power select” switch (S801) is “A” position.
2. Turn ON the regulated power supply. (All LEDs on the set lights
up, and the clock is displayed.)
Note:Press the OFF button, if the clock is not displayed.
Note:Press the OFF button, if the clock is not displayed.
3. Push the preset 4 button.
4. Push the preset 5 button.
5. Press the preset 1 button for more than two seconds.
6. Then the display indicates all lights, the test mode is set.
4. Push the preset 5 button.
5. Press the preset 1 button for more than two seconds.
6. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
1. Push the OFF button.
2. Set the power select switch (S801) is “B” position.
1. Push the OFF button.
2. Set the power select switch (S801) is “B” position.
See the adjustment location from on page 17 for the ad-
justment.
justment.
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.
Speed checker
Frequency counter
–1.5 to +2.5%
2,955 to 3,075Hz
Specification: Constant speed
Adjustment Location: See page 17.
SECTION 5
ELECTRICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head
pinch roller
rubber belt
capstan
idlers
2. Demagnetize the playback head with a head damagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup-
ply voltage unless otherwise noted.
• Torque Measurement
Mode
Torqu Meter
Meter Reading
Foward
CQ-102C
30 – 65 g•cm
(0.42 – 0.90 oz•inch)
Forward
CQ-102C
0.5 – 4.5 g•cm
Back Tension
(0.01 – 0.06 oz•inch)
Reverse
CQ-102RC
30 – 65 g•cm
(0.42 – 0.90 oz•inch)
Reverse
CQ-102RC
0.5 – 4.5 g•cm
Back Tension
(0.01 – 0.06 oz•inch)
FF, REW
CQ-201B
60 – 200 g•cm
(0.83 – 2.78 oz•inch)
• Tape Tension Measurement
Mode
Tension Meter
Meter Reading
Forward
CQ-403A
more than 90 g
(more than 3.18 oz)
Reverse
CQ-403R
more than 90 g
(more than 3.18 oz)
set
+
–
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
speaker out terminal
4
Ω
speed checker
or
frequency counter
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