— 11 —
SECTION 4
MECHANICAL ADJUSTMENT
SECTION 5
ELECTRICAL ADJUSTMENT
PRECAUTION
1.
Specified voltage: 1.3 V (DC)
2.
Switch and control position
MENU switch
a
NR
: OFF
AVLS
: OFF
SOUND
: OFF
HOLD
: OFF
VOL
: MAX
ISS
: 1
Test Tape
Tape Speed Adjustment
Procedure:
1.
Enter the FWD playback mode.
2.
Adjust RV601 so that the value of the frequency counter reading
becomes 3,000 Hz.
Specification value:
Frequency counter
2,955 Hz – 3,060 Hz
3.
Check that the frequency deviation at the beginning and ending
of a tape is within 1.5 % (45 Hz).
PRECAUTION
1.
Clean the following parts with a denatured-alcohol-moistened
swab:
record/playback/erase head
pinch roller
rubber belts
capstan
2.
Demagnetize the record/playback/erase 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 rated power
supply voltage unless otherwise noted.
• Torque Measurement
Mode
FWD
FWD
Back Tension
REV
REV
Back Tension
FF, REW
Torque Meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
Meter Reading
15 to 25 g•cm
(0.21 to 0.34 oz•inch)
Less than 2.0g•cm
(Less than 0.028 oz•inch)
15 to 25 g•cm
(0.21 to 0.34 oz•inch)
Less than 2.0g•cm
(Less than 0.028 oz•inch)
More than 50 g•cm
(More than 0.69 oz•inch)
Signal
3 kHz, 0 dB
Used for
Tape Speed Adjustment
Tape
WS-48A
Test tape
WS-48A
(3kHz, 0dB)
Set
2
REMOTE jack (J701)
16
Ω
Frequency counter
+
–
[MAIN BOARD] — SIDE B —
‘?
‘?
’?
RV601
L2
T2
TP6
TP5
IC2
13
24
1
12
T1
RV1
RV601 : Tape speed
adjustment
RV1 : FM VCO adjustment
T2 : AM IF adjustment
L2 : FM frequency coverage
adjustment
T1 : AM frequency coverage
adjustment
TP1
Adjustment Parts Location :
[MAIN BOARD] — SIDE A —
