14
MZ-G750/R700
4-8. Self-Diagnosis Result Display Mode
This set uses the self-diagnostic function system in which if an
error occurred during the recording or playing, the mechanism
control block and the power supply control block in the
microcomputer detect it and record its cause as history in the
nonvolatile memory.
By checking this history in the test mode, you can analyze a fault
and determine its location.
Total recording time is recorded as a guideline of how long the
optical pickup has been used, and by comparing it with the total
recording time at the time when an error occurred in the self-
diagnosis result display mode, you can determine when the error
occurred.
Clear both self-diagnosis history data and total recording time, if
the optical pickup was replaced.
• Self-Diagnosis Result Display Mode Setting Method
1. Setting the test mode (see page 12).
2. In the display check mode, press the [ENTER] key activates the
self-diagnosis result display mode where the LCD display as
shown below.
3. Then, each time the > key is pressed, LCD display descends
by one as shown below. Also, the LCD display ascends by one
when the
. key is pressed.
If the [ENTER] key on set is pressed with this display, the LCD
switches to the simple display mode.
4. Quit the self-diagnosis result display mode, and press the x key
to return to the test mode (display check mode).
5. The display changes a shown below each time the
[ENTER] key on the set is pressed.
However in the power mode (item number 700’s), only the
item is displayed.
6. Quit the manual mode, and press the
x key to return to the
test mode (display check mode).
4-7. Overall Adjustment Mode
Mode to adjust the servo automatically in all items.
Normally, automatic adjustment is executed in this mode at the
repair.
For further information, refer to “Section 5 Electrical Adjustments”
(see page 18).
This set LCD display
item number
adjustment value
address
• Address & Adjusted Value Display
0 113A4S1D
This set LCD display
item number
adjustment value
jitter value
• Jitter Value & Adjusted Value Display
0 110FEJ1D
This set LCD display
item number
adjustment value
block error value
• Block Error Value & Adjusted Value Display
0 11063B1D
This set LCD display
item number
adjustment value
ADIP error value
• ADIP Error Value & Adjusted Value Display
0 11072A1D
This set LCD display
item number
adjustment value
• Item Title Display
0 11LrefPw 1D
item title
This set LCD display
error display code
Total recording time when error occurred
0 XX1 0010
history
code
0 XX1
0 XXN
0 XXN1
0 XXN2
0 XXR_
XX
:Error code
:Total recording time
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