Eeprom Writing Procedure - Sharp SD-NX10W Service Manual

SD-NX10W
The details description of mechanism error
Error Display
E r - M D 1 Cannot eject the disc.
E r - M D 2 The head does not ascend.
E r - M D 3 The head does not descend.
EEPROM (IC1402) writing procedure
1. Method for setting the reference temperature value
(This setting should be performed quickly at a room
temperature, between 21 °C to 29 °C when the PWB is not
hot.)
1
When replacing the EEPROM, wait until it has cooled
2 down.
3 Connect the main unit using the single MD main PWB.
Enter the test mode as shown on page 21.
4 "EJECT"
Press the TUNER (BAND) button.
"TEMP "
5
: Measured temperature,
Find the temperature correction value for the current
ambient temperature on the following table. Adjust the
temperature correction value using the VOLUME UP/
DOWN button.
Ambient Temperature
+ 21.0 °C ~ + 23.2 °C
+ 23.3 °C ~ + 26.8 °C
+ 26.9 °C ~ + 29.0 °C
EEPROM DATA LIST (Version : 01)
Focus setting
Item indication
F G
F G 2
F F 0
F F 1
F F 2
F Z H L E V
F O K L E V h
F O K L E V L
F O S T n
D S C J G
Error Message

EEPROM WRITING PROCEDURE

: Temperature setting
Correction
-1
H
± 0
H
+1
H
Setting
9 B
H
B 1
H
1 0
H
7 0
H
E 0
H
E D
H
0 7
H
0 9
H
2 C
H
0 D
H
= E EJECT complete position
= M LOAD/EJECT halfway position
= L LOAD complete position
= D HEAD DOWN position
An example: When ambient temperature is 22 °C and
measured temperature is 7A H
Temperature setting = 7A H - 01 H
* When the measured temperature fluctuates
between two values, take lower one (if
temperature fluctuates between 7A H and
6
79 H, take 79 H).
Press the POWER button and write the temperature
setting into the EEPROM.
2. Method for making settings other than the reference
temperature
1
Install the MD main PWB in the mechanism, and connect
2
it to the main unit.
Enter the test mode as shown on page 21, and insert a
disc.
3 "AUTO AJST"
Press the CD PLAY button seven times.
4 "EEPROM SET"
Set the value according to the EEPROM DATA LIST
5 using the VOLUME UP/DOWN button.
Press the POWER button, and the settings will be written
6
into the EEPROM.
Enter the test mode again, perform an "AUTO YOBI
adjustment", and write the results into the EEPROM.
Spin setting
Item indication
S P G
S P G — i n
S P G — m i d
S P G — o u t
S P G M
S P 1
S P 2
S P 2 2
S P 3
S P 4
S P 5
S P 5 2
S P D L I M
S P K L E V m
– 30 –
HINF
(93 Pin of IC1401)
< 1.0 V
> 3 V
1.31 ~ 2.35 V
1.01 ~ 1.3 V
= 79 H
Setting
1 1
H
6 0
H
4 B
H
3 B
H
9 6
H
1 0
H
9 3
H
9 3
H
E D
H
E E
H
2 0
H
2 0
H
6 2
H
1 6
H