
– 14 –
See the adjustment location from on page 17 for the
adjustment.
0 dB=0.775 VTAPE DECK SECTION
Tape Speed Adjustment
Procedure:
1. Put the set into the FWD PB mode.
Speed checker Frequency counter
–1.5 to +2.5% 2,955 to 3,075 Hz
Specification: Constant speed
Adjustment Location: See page 17.
DOLBY Level Adjustment
Setting:
Preset 3 (DOLBY) button : OFF
SEL (VOL) button : Maximum
set +–
test tape
WS-48A
(3 kHz, 0 dB)
speaker out terminal
4
Ω
speed checker
or
frequency counte
set
test tape
P-4-D400
(400 Hz, 0 dB)
MAIN board
TP (DOLBY)
+
–
level mete
L-CH
R-CH
Pocedure:
1. Put the set into the FWD PB mode.
2. Adjust RV401 (L-CH) and RV301 (R-CH) so that level meter
reading is – 6 ± 1 dB (0.35 to 0.43 V).
3. Select the REV play mode, and confirm that level meter read-
ing is within the specification given above.
Adjustment Location: See page 17.
SECTION 4
MECHANICAL ADJUSTMENTS
1. Clean the following parts with a denatured-alcohol-moistene
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 Meter Reading
Forward 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 CA-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)
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)
•Tape Tension Measurement
SECTION 5
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level andAM (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. Return the “power select” switch (S801) to initially aet posi-
tion.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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