DOWNLOAD Sony CMT-NEZ50 / HCD-NEZ50 Service Manual ↓ Size: 3.79 MB | Pages: 49 in PDF or view online for FREE

9

6

flexible flat cable (13 core) 
(CN500)

3

connector
(CN900)

2

connector
(CN301)

1

connector
(CN315)

9

front panel assy

8

screw
(BVTT 3

 

×

 6)

7

three screws
(BVTP 3

 

×

 8)

8

screw
(BVTP 3

 

×

 6)

5

flexible flat cable (17 core) 
(CN321)

4

flexible flat cable (11 core) (E, E51, MX, AR) /
flexible flat cable (13 core) (AEP, UK, KR)
(CN320)

•

Abbreviation
AR : Argentina model
E51 : Chilean and Peruvian models
KR : Korean model
MX : Mexican model

2

three screws
(BVTP 2.6

 

×

 8)

2

screw
(BVTP 2.6

 

×

 8)

3

terminal lead wire

4

mechanical deck
(

CMAL5Z235A)

1

wire (flat type) (6 core)
(FFC801)

10

1

two connectors
(CN902, CN903)

4

flexible flat cable (9 core) (E, E51, MX, AR, KR) /
flexible flat cable (11 core) (AEP, UK )
(CN319)

2

screw (BVTT 3

 

×

 8)

3

5

MAIN board block

•

Abbreviation
AR : Argentina model
E51 : Chilean and Peruvian models
KR : Korean model
MX : Mexican model

1

two screws
(BVTP 3

 

×

 8)

2

4

tuner (FM/AM)

3

flexible flat cable (9 core) (E, E51, MX, AR, KR) /
flexible flat cable (11 core) (AEP, UK)

•

Abbreviation
AR : Argentina model
E51 : Chilean and Peruvian models
KR : Korean model
MX : Mexican model

11

When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.
Procedure:

1. Set the FUNCTION to CD.
2. While pressing the [DSGX] button, press the  

CD 

u

  button

and turn the [VOLUME] knob in the counter-clock wise.

3. CD error history is displayed on the liquid crystal display.

The first digit from the left indicates:
The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
liquid crystal display.

The second digit from the left indicates:
(Error history No. display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)
The third and 4th digit from the left indicates which error status is
indicated.

Display

Status

0

1

Not focused (TOC read without a disc)

0

2

GFS NG (TOC read with a disc chucked)

0

3

Start operation time-over

0

4

Defocused continuously (Defocused during TOC reading)

0

5

Q code not entered for specified time

0

6

Tracking not turned ON

0

7

Blank disc (Blank disc TOC read)

The 5th and 6th digit from the left indicates:
(Error step display)
The 5th and 6th digit from the left indicates which processing when
a trouble occurred

Display

Contents

0

1

Power OFF in progress

0

2

Power ON in progress

0

3

Initialize in progress

0

4

Oscillation stopping

0

5

From oscillation stop, oscillation starting

0

6

Stopping

0

7

Stop operation is under way

0

8

Start operation in progress

0

9

TOC read in progress

0

A

Search operation is under way

0

B

Playback operation is under way

0

C

Pause operation is under way

0

D

Playback manual search operation is under way

0

E

Pause manual search operation is under way

The 7th and 8th digit from the left indicates:
The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)

The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. While pressing the

x

button, press the

I/

1

button and turn

the [VOLUME] knob in the counter-clock wise.

3. The message “RESET” is displayed and the set is reset.

All segments of liquid crystal display are tested, and the version
and released date of the micro computer are displayed.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. While pressing the [DSGX] button, press the

l

 

m

button

and turn the [VOLUME] knob in the counter-clock wise.

Then all segments of liquid crystal display are turned on.

3. Press the [DSGX] button, the version and released date of the

micro computer are displayed.
example of display:

4. Press the [TUNER/BAND]  button, the model name and

distination are displayed.
example of display:

5. Press the [PLAY MODE/TUNING MODE] button, “KEY 0 0” is

displayed on the liquid crystal display, and key test mode in.
Each time a key is pressed, the numerical value corresponding
to each key is displayed on the liquid crystal display.

6. To exit from this mode, perform the “COLD RESET”.

Either the 9 kHz step or 10 kHz step can be selected for the AM
channel step.
Procedure:

1. Set the FUNCTION to AM, and press the

I

/1

button to turn

the power off.

2. While depressing the [TUNER/BAND] button, press the

I

/1

button.

3. The message “9K STEP” or “10K STEP” is displayed on the

liquid crystal display, and thus the channel step is changed
over.

1104 V104

Version of micro computer
(In this case, version 104)

released date of micro computer
(In this case, released of November 4)

6NE5  CE2

distination
(In this case, European model)

model name
(In this case, HCD-NEZ50)

12

This mode is for switch the CD power supply on/off. Even if this
state pulls out AC plug, it is held.
Procedure:

1. Press the

I/

1

button to turn the power on.

2. Set the FUNCTION to CD.
3. Press the

I/

1

button again to turn the power off (standby).

4. While pressing the  

CD 

u

  button, press the

I/

1

button.

5. If turns power on and display “CD POWER”, then display

“ON” or “OFF”.

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

swab :

record/playback head

pinch roller

erase head

rubber belts

capstan

idlers

2. Demagnetize the record/playback head with a head

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

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

the parts adjusted.

5. The adjustments should be performed with the rated power

supply voltage unless otherwise noted.

Mode

Torque Meter

Meter Reading

2.95 – 6.86 mN

⋅

m

FWD

CQ-102C

(30 – 70 g

⋅

cm)

(0.42 – 0.97 oz

⋅

inch)

FWD

0.15 – 0.539 mN

⋅

m

Back Tension

CQ-102C

(1.5 – 5.5 g

⋅

cm)

(0.021 – 0.076 oz

⋅

inch)

more than 5.89 mN

⋅

m

FF

CQ-201B

(more than 60 g

⋅

cm)

(more than 0.83 oz

⋅

inch)

more than 5.89 mN

⋅

m

REW

CQ-201B

(more than 60 g

⋅

cm)

(more than 0.83 oz

⋅

inch)

Mode

Tension Meter

Meter Reading

FWD

CQ-403A

more than 100 g

(more than 3.53 oz)