DOWNLOAD Sony CMT-J3MD / HCD-J3MD Service Manual ↓ Size: 14.78 MB | Pages: 96 in PDF or view online for FREE

9

Procedure :
1.

When the power ON, press the ?/1 button while pressing PLAY MODE/DIRECTION/TUNIG MODE button and s button together.

2.

Frame of the MD mark and the CD mark flash, and “BASS/TRE FLAT” appears for a moment.

3.

When the VOLUME knob is turned clockwise, “VOLUME MAX” appears for a moment.

4.

When the VOLUME knob is turned counterclockwise, “VOLUME MIN” appears for a moment.

5.

Every pressing of the MUSIC MENU “R” button changes the display in the following order. “BASS/TRE MAX” 

t “BASS/TRE MIX”

t “BASS/TRE FLAT”

6.

Select the function “TAPE” using the FUNCTION button.  Set the test tape AMS-110A or AMS-120.

7.

Press PLAY MODE/DIRECTION/TUNIG MODE button to enter either “j” (loop) or “h” (two way).

8.

Press the SYNCHRO REC button to start the AMS test.

9.

Number of AMS signals is counted during the AMS test and the message “EDG#” (# means a number) appears.  When the test tape
either AMS-110A or AMS-120 is used, the AMS signal is detected twice before shut off.

10. When the AMS test ends, either “OK” or “NG” appears.
11.  To exit the MC test mode, either press the ?/1 button or perform the cold reset as described above.

(FWD) REW

(Shut off)

(FWD) FF AMS

(FWD) REW AMS

END

(Shut off)

(Shut off)

10

• Mode for repeating operations of the CD player and TC deck automatically.

When errors occur:
Aging stops and a message indicating that an error has occurred such as “CD MEC ERR” is displayed.
(For details of errors, refer to “Error History Display Mode”.)

When no errors occur:
Aging is repeatedly performed.

Procedure:
1. Load any CD and a tape.
2. Press the  FUNCTION  button and set the function to CD.
3. While pressing the  PLAY MODE/DIRECTION/TUNING MODE  button and ENTER/START  button, press the  ?/1  button.
4. “AGING” is displayed on the fluorescent display tube briefly.
5. When the aging mode is set, the CD mark and MD mark on the fluorescent tube CD of player and TC deck momentarily start aging.
6. Operations are performed in the following sequence during aging.

7.

To end aging, execute the cold reset.

Mode for checking the history of errors which have occurred in the CD player.
Execute this mode after ending the aging mode.

Procedure:
1.

Press the  FUNCTION  button, and set the function to “CD”.

2.

While pressing the  s  button and FUNCTION  button, press the  ?/1  button.

3.

“EMC@@EDC**” id displayed.

@@ : Number of mechanism errors (Last 3 errors)
**

: Number of errors (NO DISC ERROR) which occurred after chucking (Last 3 errors)

4.

To check the history of mechanism errors, press the  PLAY MODE/DIRECTION/TUNING MODE  button, and to check BD errors,
press the  REPEAT/DOLBY NR/STEREO/MONO  button, and switch the display.

5.

To end, press the  

1/u  button and turn OFF the power.

6.

To erase the error history, perform cold reset.
(While pressing the  PLAY MODE/DIRECTION/TUNING MODE  button and A MD button, press the  ?/1  button.)

REW

(Shut off) "TAPE AG-1"

PLAY

FF

REV PLAY

REW

(2 min)

"TAPE AG-2"

(Shut off) "TAPE AG-3"

(2 min)

"TAPE AG-4"

(Shut off) "TAPE AG-5"

Reading of TOC

Playback of first track (3sec.)

Playback of last track (3sec.)

CD tray open

CD tray close

11

(To switch the history, press the  PLAY MODE/DIRECTION/TUNING MODE  button.)

Display
  E@@M**#*$*

@@: Error number. 00 is the latest
*: Invalid
#: Load in operations related

D: Operations stopped due to problems other than mechanism related during CLOSE
E: Operations stopped due to problems other than mechanism related during OPEN
C: Operations stopped due to problems other than mechanism related during chucking up

$: Load out operations related

1: Operations stopped during chucking up
2: Operations stopped during chucking down

(To switch the history, press the  REPEAT/DOLBY NR/STEREO/MONO  button.)

Display
  E@@D##SS%*

@@: Error number. 00 is the latest
##: Error details

01: Focus error
02: GFS error
03: Setup error

$$: Retry performed/not performed

00: Determined as NO DISC without chucking retry
02: Determined as NO DISC after chucking retry

%: State when determined as NO DISC

1: When stopped
2: During setup
3: During TOC READ
4: During access
5: During playback
6: During PAUSE
7: During manual search (during playback)
8: During manual search (during Pause)

*: Invalid

12

The special jig (J-2501-149-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items
to be performed are shown as follows.

GND : Ground
I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser)
IOP

: For measuring IOP (Check the deterioration of the optical pick-up laser)

TEO : TRK error signal (Traverse adjustment)
VC

: Reference level for checking the signal

RF

: RF signal (Check jitter)

RF
VC
TEO

For MDM-3

For MDM-5

IOP
I+3V

VC
RF
TEO
IOP
I+3V
GND

VC

RF

TEO

IOP

I+3V

GND

1

5

1

6

CN110

RF

5P connector

6P connector

VC

TEO

IOP

I+3V

GND

Mechanism deck