Table of Contents
Advertisement
Error List
Can't (*)
* =
f :
Focus retraction
a :
Servo adjustment
s :
Search convergence
r :
Data read
p :
Spindle startup
Er-MD (**)
** = 80
"Er-MD80" is displayed when data is not read from EEPROM
correctly.
(Data and the check sum are not identical.)
There may be a problem with either EEPROM or the communication
path including the microcomputer.
When replacing the EEPROM, data needs resetting.
Refer to the service manual for details.
EEPROM (IC402) writing procedure
Temperature reference setting method.
[1] Measurement, calculation and setting procedure.
(1) Set the TEST mode.
(2) Start the 'EEPROM' mode 'Temp' menu.
Press the PLAY button.
•
'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference)
•
(3) Once press
, and determine the displayed microcomputer TEMP input AD value.
SKIP UP
• 'TPin##' is displayed. (## = TEMP input AD value)
(4) At the ambient temperature, determine the temperature corrected value from the "temperature measurement value
correction table".
(5) Determine the temperature reference, using the following formula.
• Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value
(6)
Set the temperature reference value by button operation, and check whether the temperature code indication corresponds to "Temperature
Code Identification Table".
[2] Temperature measurement value correction table.
Ambient
Temperature
temperature
correction
o
o
+ 9
C ~ +11
C
+12
o
C ~ +14
o
C
o
o
+15
C ~ +16
C
+17
o
C ~ +19
o
C
+20
o
C ~ +22
o
C
+23
o
C ~ +24
o
C
+25
o
C ~ +27
o
C
o
o
+28
C ~ +30
C
+31
o
C ~ +33
o
C
Center
temperature
o
– 05 h
+ 10.0
C
– 04 h
+ 12.7
o
C
o
– 03 h
+ 15.4
C
– 02 h
+ 18.2
o
C
– 01 h
+ 20.9
o
C
± 00 h
+ 23.6
o
C
+ 01 h
+ 26.3
o
C
o
+ 02 h
+ 29.0
C
+ 03 h
+ 31.8
o
C
** = 41
"Er-MD41" is displayed when an error occurs while writing U-TOC
for trial (recorders only).
(Data error found when reading data after it is written.)
There may be a problem with the recording head, recording signal
generating circuit including the system LSI, or pickup laser.
T Form(*)
* =
t :
TNO information
a :
Address information
L :
Pointer information
[3] Temperature code identification.
Ambient
temperature
o
o
– 9
C ~ +10
C
+ 3
o
C ~ +21
o
C
o
o
+15
C ~ +33
C
+26
o
C ~ +43
o
C
– 15 –
IM-MT899H/IM-MT899W
Temperature
Center
correction
temperature
o
08 h
+ 0.5
07 h
+ 12.5
o
o
06 h
+ 23.6
05 h
+ 35.0
o
C
C
C
C
Advertisement
Table of Contents
Troubleshooting
