Aiwa FR-C150 Service Manual download pdf (Page 21)

CX-JN331/JPK331

SECTION 5

MECHANICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured alcohol-moistened

swab:

record/playback heads pinch rollers

erase head rubber belts

capstan idlers

2. Demagnetize the record/playback head with a head de-

magnetizer.

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

back tension

REV

back tension

FF/REW

FWD tension

REV tension

Torque meter

FCQ-102C

CQ-102C

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

Meter reading

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

3.06 N • m to 6.96 N • m

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

6.96 N • m to 14.02 N • m

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

9.80 N • m

100 g or more

(3.53 oz or more)

9.80 N • m

100 g or more

(3.53 oz or more)

SECTION 6

ELECTRICAL ADJUSTMENTS

DECK SECTION 0 dB = 0.775 V

1. Demagnetize the record/playback head with a head

demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to

the parts adjust.

• Test Tape

Tape Signal Used for

P-4-A100 10 kHz, −10 dB Azimuth Adjustment

RECORD/PLAYBACK HEAD AZIMUTH ADJUST-

MENT

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback

2. Turn the adjustment screw and check output peaks. If the peaks

do not match for L-CH and R-CH, turn the adjustment screw

so that outputs match within 1dB of peak.

set

MAIN board

CN309

(L-CH)

(R-CH)

MAIN board

CN309

(HP-GND)

–

level meter

test tape

P-4-A100

(10 kHz,

−

10 dB)

Screw

position

L-CH

peak

within

1dB

Output

level

L-CH

peak

R-CH

peak

within

1dB

Screw

position

R-CH

peak

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 79 80

Comments to this Manuals

No comments

Aiwa FR-C150 Service Manual Page 21

Comments to this Manuals

Related products and manuals for Alarm clocks Aiwa FR-C150