Sony Walkman MZ-MH900 Service Manual page 16

MZ-NH900
Flow of Self-diagnosis Result Display mode operation:
***
1 ####
[VOL +] key [VOL --] key
***
N ####
[VOL +] key [VOL --] key
***
N1####
[VOL +] key [VOL --] key
***
N2####
[VOL +] key [VOL --] key
***
R_####
[VOL +] key [VOL --] key
7-2. Error Code of The Self-Diagnosis Result Display
Mode
Error code
00 No error
01 Attempt to access an abnormal address
02 High temperature detected
03 Focus error (no change)
04 Abnormal rotation of disc
05 Fault of disc discriminate
06 Error of access loop (no change)
07 Error of access loop (with change)
08 Could not read address
09 Focus error (with change)
12 Could not read data with SYNC
13 TOC address data error
32 Focus error, ABCD offset error
33 Tracking error, offset error
34 Tracking error, X1 tracking error, offset error
7-3. Clear The Total Recording Time
After replacing the optical pick-up, clear the total recording time.
1. Enter the test mode (Display Check mode).
2. Press the key to activate the Self-Diagnosis Result Display
>
mode.
3. Press the [VOL--] key once to display the total recording time
indication.
4. Press the key and display "ClrOK?".
X
5. Press the key again to display "RecT 0" and clear the total
X
recording time.
16
The first error
The last error
One error before
the last
Two error before
the last
Total recording time
Description
8. KEY CHECK MODE
This mode is used for key check.
Operation of The Key Check Mode
1. Enter the test mode (Display Check mode).
2. Press the [GROUP] key to activate the Key Check mode where
the LCD displays as shown below.
Display
11*
$$$$$$ ##
"*" : Remote commander (0: with, 4: without)
"$$$$$$" : Pressed key name.
When remote commander key is pressed, display becomes
as "r$$$$$".
When the jog dial is turned, it displays "JOG+ X" or "JOG-
X" ("X" is number of 1 to 3). If the jog dial is turned four
click, it displays "JOG+OK" or "JOG-OK".
"##" : Key voltage of remote commander. (Hexadecimal number)
3. When all keys (*1) check is OK on the main unit, it displays
as follows.
Display
888
SET OK ##
When all keys (*1) check is OK on the remote commander, it
displays as follows.
Display
888
RMC OK ##
*1) Turn the jog dial four click clockwise and counterclockwise to
jog test is OK.
4. When all keys check are OK both the main unit and the remote
commander, it display backs to the Display Check mode
automatically.
5. To quit the Key Check mode, open the lid and return to the
Display check mode.