Eeprom Writing Procedure - Sharp SD-CX1H(BL) Service Manual

SD-CX1H
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
down.
2. Connect the main unit using the single MD main PWB.
3. Enter the test mode as shown on page 26.
"EJECT"
4. Press the TUNER (BAND) button.
"TEMP "
: Measured temperature,
5. 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 7AH
Temperature setting = 7A H - 01 H
* When the measured temperature fluctuates
between two values, take lower one (if
temperature fluctuates between 7AH and
79H, take 79H).
6. 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
it to the main unit.
2. Enter the test mode as shown on page 26, and insert a
disc.
"AUTO AJST"
3. Press the CD PLAY button seven times.
"EEPROM SET"
4. Set the value according to the EEPROM DATA LIST
using the VOLUME UP/DOWN button.
5. Press the POWER button, and the settings will be written
into the EEPROM.
6. 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
– 34 –
HINF
(93 Pin of IC1401)
< 1.0V
> 3V
1.31 ~ 2.35V
1.01 ~ 1.3V
= 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