DOWNLOAD Sony CFD-Z125 / CFD-Z135 Service Manual ↓ Size: 1.31 MB | Pages: 41 in PDF or view online for FREE

— 13 —

1

 CN305

2

 CN302

3

 Press the eject ( 

p

 

6

) button

6

 Two claws

4

 Screws 2pcs

     (+BTP 3 

×

10)

7

 Mechanism deck

     (MF-Z125)

5

 lag

1

 CN003

2

 CN303

3

 Two claws

3

 Two claws

4

 Function button

5

 Screws 3pcs

     (+BTP 3 

×

10)

6

 Three

     claws

7

 Remove solder

8

 Earth wire

9

 FRONT board

0

 Remove solder

!¡

 SENSOR board

     (Z135 only)

— 14 —

1

 Press the eject ( 

p

 

6

) button

2

 Two claws

3

 Remove the Cassette door

     to direction of the arrow 

A

A

2

 Two claws

1

 Remove solder

2

 Screw

     (MB)

3

 Claw

4

 Main belt

5

 Screws 2pc

     (Motor collar)

6

 Motor bracket

7

 Capstan/reel motor

     (M601)

— 15 —

Follow the disassembly procedure in the numerical order given.

Claw

Dial pointer

3

 Setting the

     dial pointer.

2

 Two screws

     (+BTP3 

×

12)

1

 Tuning knob holder ass`y

A

5

 MAIN board

4

 Rotate the dial drum fully

     in direction of the arrow 

A

.

— 16 —

1. The adjustments should be perfomed in the order given in the

service manual. (As a general rule. Playback circuit adjustment
should be completed before performing recording circuit
adjustment.)

2. The adjustment should be performed for both L-ch and R-ch

unless otherwise  indicated.

•

Switch Location
FUNCTION switch ........................................................ TAPE
VOLUME switch ..................................................... maximum

Procedure :
1. Mode : Playback

2. Turn the adjustment screw for the maximum output levels. If

these levels do not match, turn the adjustment screw until both
of output levels match together within 1dB.

PHONES

32 

Ω

0.25 V (–10dB)

Load impedance

Output level

Type

P-4-A063

Used for

Head azimuth  adjustment.

Signal

6.3kHz, –10dB

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

swab:

record/playback head

pinch roller

erase head

rubber belts

capstans

idlers

2. Demagnetize the record/playback head with a head

demagnetizer. (Do not bring the head demagnetizer close to the
erase head.)

3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustment should be performed with the rated power supply

voltage unless otherwise noted.

Meter Reading

30 – 70 g

•

cm

(0.42 – 0. 97 oz

•

inch)

1 – 6 g

•

cm

(0.014 – 0.084 oz

•

inch)

more than 55 g

•

cm

(more than 0.76 oz

•

inch)

more than 55 g

•

cm

(more than 0.76 oz

•

inch)

Mode

FWD

FWD

back tension

FF

REW

Torque Meter

CQ-102C

CQ-201B

Mode

FWD

Meter Reading

more than 80g

(more than 1.12 oz

•

inch)

Tension Meter

CQ-403A

SP OUT

32 

Ω

0.775 V (0dB)

3.2 

Ω

test tape
P-4-A063
(6.3kHz, –10dB)

set

level meter

SPEAKER terminal (JK302)

+

–

screw angle

L-CH
peak

R-CH
peak

R-CH
peak

L-CH
peak

Screw
position

output
level

within
1dB

within
1dB