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SECTION 4
MECHANICAL ADJUSTMENTS
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 demagnetizer.
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 power supply
voltage unless otherwise noted.
• Torque Measurement
Mode
Torqu Meter
Forward
CQ-102C
Forward
CQ-102C
Back Tension
Reverse
CQ-102RC
Reverse
CA-102RC
Back Tension
FF, REW
CQ-201B
• Tape Tension Measurement
Mode
Tension Meter
Forward
CQ-403A
Reverse
CQ-403R
Meter Reading
30 – 65 g•cm
(0.42 – 0.90 oz•inch)
0.5 – 4.5 g•cm
(0.01 – 0.06 oz•inch)
30 – 65 g•cm
(0.42 – 0.90 oz•inch)
0.5 – 4.5 g•cm
(0.01 – 0.06 oz•inch)
60 – 200 g•cm
(0.83 – 2.78 oz•inch)
Meter Reading
more than 90 g
(more than 3.18 oz)
more than 90 g
(more than 3.18 oz)
– 14 –
SECTION 5
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM (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
up, and the clock is 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.
<Release the Test mode>
1. Push the OFF button.
2. Set the "power select" switch (S801) is "original" position.
See the adjustment location from on page 17 for the ad-
justment.
TAPE DECK SECTION
Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
test tape
WS-48A
(3 kHz, 0 dB)
set
speaker out terminal
Specification: Constant speed
Speed checker
–1.5 to +2.5%
Adjustment Location: See page 17.
0 dB=0.775 V
speed checker
or
frequency counter
4 Ω
–
+
Frequency counter
2,955 to 3,075Hz
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