MDS-SD1 - Sony Audio Service Manual (repair manual). Page 2

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The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which
show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box
in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for using the Self-
Diagnosis Function (Error History Display Mode)”.

Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes the least required
procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the  MENU/NO  button to exit
the mode.

1. While pressing the  ENTER/YES  button and  

π  button, connect the power plug to the outlet, and release the  ENTER/YES  button and

π  button.

2. “TEMP CHECK” will be displayed. Press the  MENU/NO  button to display “Check”.
3. Rotate the  – 

˜ +  knob and when “[Service]” is displayed, press the  ENTER/YES  button.

4. Rotate the  – 

˜ +  knob and display “ERR DP MODE”.

5. Pressing the  ENTER/YES  button sets the error history mode and displays “total rec”.
6. Select the contents to be displayed or executed using the  – 

˜ +  knob.

7. Pressing the  CD SYNC/MD WM SYNC  button will display or execute the contents selected.
8. Pressing the  CD SYNC/MD WM SYNC  button another time returns to step 5.
9. Pressing the  MENU/NO  button displays “ERROR DP MODE” and exits the error history mode.
10.To exit the test mode, press the  

1/u  button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends.