4-5. SELECTING THE TEST MODE

There are 31 types of test modes as shown below. The groups can be switched by pressing the =0/MD/CD/TUNING – button or )+/MD/CD/TUNING + button. After selecting the group to be used, press the ENTER/YES “R” button. After setting a certain group , pressing the =0/MD/CD/TUNING – button or)+/MD/CD/TUNING + button switches between these modes.

Refer to “Group” in the table for details selected.

All items used for servicing can be treated using group S. So be carefully not to enter other groups by mistake.

Display

Contents

Mark

 

Group (*)

 

 

 

 

 

 

 

 

TEMP CHECK

Temperature compensation offset check

 

C

 

S

 

 

 

 

 

 

 

 

LDPWR CHECK

Laser power check

 

C

 

S

 

 

 

 

 

 

 

 

EF MO CHECK

Traverse (MO) check

 

C

 

S

 

 

 

 

 

 

 

 

EF CD CHECK

Traverse (CD) check

 

C

 

S

 

 

 

 

 

 

 

 

FBIAS CHECK

Focus bias check

 

C

 

S

 

 

 

 

 

 

 

 

S curve CHECK

S letter check

(X)

C

 

 

 

 

 

 

 

 

 

 

VERIFY MODE

Non-volatile memory check

(X)

C

 

 

 

 

 

 

 

 

 

 

DETRK CHECK

Detrack check

(X)

C

 

 

 

 

 

 

 

 

 

 

TEMP ADJUST

Temperature compensation offset adjustment

 

 

A

S

 

 

 

 

 

 

 

 

LDPWR ADJUST

Laser power adjustment

 

 

A

S

 

 

 

 

 

 

 

 

EF MO ADJUST

Traverse (MO) adjustment

 

 

A

S

 

 

 

 

 

 

 

 

EF CD ADJUST

Traverse (CD) adjustment

 

 

A

S

 

 

 

 

 

 

 

 

FBIAS ADJUST

Focus bias adjustment

 

 

A

S

 

 

 

 

 

 

 

 

EEP MODE

Non-volatile memory control

(X) (!)

 

 

 

D

 

 

 

 

 

 

 

MANUAL CMD

Command transmission

(X)

 

 

 

D

 

 

 

 

 

 

 

SVDATA READ

Status display

(X)

 

 

 

D

 

 

 

 

 

 

 

ERR DP MODE

Error history display, clear

 

 

 

S

 

 

 

 

 

 

 

 

SLED MOVE

Sled check

(X)

 

 

 

D

 

 

 

 

 

 

 

ACCESS MODE

Access check

(X)

 

 

 

D

 

 

 

 

 

 

 

0920 CHECK

Outermost circumference check

(X)

 

 

 

D

 

 

 

 

 

 

 

HEAD ADJUST

Head position check

(X)

 

 

 

D

 

 

 

 

 

 

 

CPLAY2 MODE

Same functions as CPLAY MODE

(X)

 

 

 

D

 

 

 

 

 

 

 

CREC2 MODE

Same functions as CREC MODE

(X)

 

 

 

D

 

 

 

 

 

 

 

ADJ CLEAR

Initialization of non-volatile memory of adjustment value

 

 

A

S

 

 

 

 

 

 

 

 

AG Set (MO)

Auto gain output level adjustment (MO)

 

 

A

S

 

 

 

 

 

 

 

 

AG Set (CD)

Auto gain output level adjustment (CD)

 

 

A

S

 

 

 

 

 

 

 

 

Iop Read

IOP data display

 

C

 

S

 

 

 

 

 

 

 

 

Iop Write

IOP data write

 

 

A

S

 

 

 

 

 

 

 

 

INFORMATION

Microprocessing version display

 

C

 

S

 

 

 

 

 

 

 

 

CPLAY MODE

Continuous play mode

 

C

A

S

D

 

 

 

 

 

 

 

CREC MODE

Continuous recording mode

 

C

A

S

D

 

 

 

 

 

 

 

Group (*)

 

C: Check

A: Adjust

S: Service

D: Develop

•For details of each adjustment mode, refer to “5. Electrical Adjustments”.

For details of “ERR DP MODE”, refer to “Self-Diagnosis Function” on page 2.

•If a different mode has been selected by mistake, press the MENU/NO “R” button to exit that mode.

•Modes with (X) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the MENU/NO “R” button to exit the mode immediately. Be especially careful not to set the modes with (!) as they will o verwrite the non-volatile memory and reset it, and as a result, the unit will not operate normally.

27

Page 26 Page 28
Page 27
Image 27
Sony HCD-MD373 service manual Selecting the Test Mode, Display Contents Mark Group
Page 26 Page 28

HCD-MD373 specifications

The Sony HCD-MD373 is a compact mini audio system that offers an impressive blend of sound quality, versatility, and advanced technology, making it an ideal choice for audio enthusiasts and casual listeners alike. One of the standout features of the HCD-MD373 is its MiniDisc recorder/player, a legacy technology that allows users to record high-quality audio onto MiniDiscs, providing an alternative to traditional CDs and cassettes. This feature is particularly appealing for those looking to capture live music or create personalized playlists.

Another notable aspect of the HCD-MD373 is its integrated CD player, which supports a variety of formats including CD, CD-R, and CD-RW. This versatility means that users can enjoy their favorite albums without the hassle of switching devices. The audio system also includes a built-in AM/FM tuner, enabling users to easily tune into their favorite radio stations and enjoy live broadcasts.

The HCD-MD373 is equipped with a powerful amplifier that delivers impressive sound output, complemented by its two-way speaker system. The speakers provide a rich audio experience with clear highs and deep lows, making it suitable for various music genres, from classical to contemporary. The system also features a bass boost function that enhances low-frequency sounds, allowing for a more immersive listening experience.

In terms of connectivity, the HCD-MD373 offers multiple inputs and outputs, including audio line-in, headphone jacks, and a digital optical output. These features make it easy to connect external devices such as MP3 players, smartphones, or even home theater systems. Additionally, the audio system supports various playback options, including shuffle and repeat modes, providing enhanced flexibility for users.

The design of the HCD-MD373 is sleek and modern, with a compact form factor that allows it to fit seamlessly into any living space. Its user-friendly interface, complete with an LCD display, makes it easy to navigate and control playback settings. Overall, the Sony HCD-MD373 is a testament to Sony's commitment to quality audio experiences, combining innovative features, robust technology, and elegant design into a single, powerful audio system. Whether enjoying a quiet evening at home or hosting a gathering with friends, the HCD-MD373 is sure to deliver satisfying sound and performance.
Top Page Image Contents