HCD-ZX50MD - Sony Audio Service Manual (repair manual). Page 3

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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 other modes are entered accidentally, press the  NAME EDIT/
CHARACTER  button while REC IT is lit, and when REC IT goes off, press the  MD Z  button to exit the mode.

This system has the Self-diagnosis display
function to let you know if there is a system
malfunction. The display shows a code made up of
three letters and a message alternately to show you
the problem. To solve the problem refer to the
following list. If any problem persists, consult
your nearest Sony dealer.

The MD is protected against erasure.
p Remove the MD and slide the tab to close the

slot (page 37).

You are attempting to record a CD with a
format that the system does not support, such as
CD-ROM.
p  ––

Recording is not possible.
p Move the system to a stable place and start

recording over from the beginning.

The MD is dirty or is scratched or the MD does
not meet the standards.
p Change the MD with another one and start

recording over from the beginning.

The MD cannot read the disc information
correctly.
p Eject the MD once, then insert it again.

The MD cannot read the disc information
correctly.
p Change the MD with another one.
p Erase all the recorded contents of the MD

using the Erase function on page 52.

This unit complies with the Serial Copy
Management System (SCMS) which limits the
number of digital copies that can be made of
any given digital audio source (page 90).

You tried to record from the digital component
when no component is connected to OPTICAL
IN jack or the digital component is not
connected correctly.
p Connect the digital component correctly to

OPTICAL IN jack with a digital optical cable.

The power of the connected digital component
is off.
p Turn on the digital component.

The component has internal problems.
p Consult your nearest Sony dealer.

There is a problem with the laser pickup.
p The laser pickup may be damaged. Consult

your nearest Sony dealer.

1.

In the power ON state, set the function to MD, and while pressing the  DISPLAY  and  x  buttons together, press  V-GROOVE  . While
the test mode is set. “[Check]” will be displayed.

2.

Move the multi-stick left and right to display “[Service]” and press the  PUSH ENTER  button.

3.

Move the multi-stick left and right to display “Err Display”.

4.

Press the  PUSH ENTER  button to enter the error history mode. “op rec tm” will be displayed.

5.

Select the item to be displayed or executed using the multi-stick.

6.

Press the  NAME EDIT/CHARACTER  button so that REC IT lights up.

7.

Press the  MD REC MODE  button to display the selected item.

8.

Press the  REC MODE  button another time to return to step 4.

9.

Pressing the  CLEAR  button when REC IT is lit displays “Err Display” and exits the error history display mode.

10. To exit the test mode, press the  MD Z  button while REC IT is off. This sets the standby state and ends the test mode.