Sharp MDX-5 Service manual

MD-X5/X5H/X5W/X7/X7H/X8/X8H/X8W/XV300H/XV300X

CORRECTION

• Correction of description
of MD unit adjustment

SERVICE MANUAL

No. SX890MDX5CORT

MD-X5
MD-X5H

• Correction of EEPROM
writing procedure

• Note for users in UK

Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Performers Protection Act 1956, the Pertmers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

US and foreign patents licensed from Dolby Laboratories Licensing
Corporation.

MODEL
MD-X5 S9771MDX5////
MD-X5H S0781MDX5H///
MD-X5W S1804MDX5W///
MD-X7 SX787MDX7////
MD-X7H SX786MDX7H///
MD-X8 S0778MDX8////
MD-X8H S0779MDX8H///
MD-X8W SX784MDX8W///
MD-XV300H S3716MDXV300H
MD-XV300X S2713MDSA300X

BASE SERVICE MANUAL No.

MD-X5W
MD-X7
MD-X7H
MD-X8
MD-X8H
MD-X8W
MD-XV300H
MD-XV300X

MD-DX300H and MD-SA300H and CP-XV300H constitute
MD-XV300H.
MD-DX300X and MD-SA300X and CP-XV300 constitute
MD-XV300X.

Thease models MD-X7/MD-X7H have almost the same
structure as the former models MD-X8/MD-X8H except for
some outer parts, Keyboard Input/PC control circuit, and so
only these parts are here described. When servicing the MD­X7/MD-X7H, please refer to the already issued service manual
for MD-X8 (S0778MDX8////)/MD-X8H (S0779MDX8H///) as
well as this service manual.

SHARP CORPORATION

The description of adjustment for the models above was
found to be partially incorrect. Hence, the revision is
issued.

• Correction of description of MD unit adjustment

• Correction of EEPROM writing procedure
Please use this supplement together with the previously
issued service manuals for the MD-X5/MD-X5H/MD-X5W/
MD-X8/MD-X8H/MD-X8W/MD-XV300H/MD-XV300X.

• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.

This document has been published to be used

– 1 –

for after sales service only.
The contents are subject to change without notice.

MD-X5/X5H/X5W/X7/X7H/X8/X8H/X8W/XV300H/XV300X

MD-X5/X5H/X5W

: Places to add/change/correct

MD SECTION (See the MD-X5/MD-X5W service manual, page 16.) (See the MD-X5H service manual, page 20.)

When the combination consisting of the pickup mechanism and the PWB is changed, enter the TEST mode, make a preliminary
automatic adjustment and then a full automatic adjustment. Then store the adjustment data in the EEPROM.
When the EEPROM is replaced, enter the TEST mode and write the data settings into the EEPROM. Then, make a preliminary
automatic adjustment and a full automatic adjustment. Finally, store the adjustment data in the EEPROM.

• Note

Remove the MD unit for repeir, and after installing it in the set, be dure to reset it and ascertain that reset has been done.
Resetting procedure (1) Unplug the AC cord from the socket, and hold down the RESET button provided at the rear side

for more than 10 seconds.
(2) Once set the TEST MODE (holding down the TEST MODE (X-BASS button) and button
together, press the POWER button), and then turn off power.

EEPROM (IC1402) writing procedure

1. Procedure to replace EEPROM and to write the initial
value of microcomputer in EEPROM

(See the MD-X5/MD-X5W service manual, page 28.)
(See the MD-X5H service manual, page 32.)

(1) Replace EEPROM.
(2) Refer to the latest EEPROM data list.
(3) Hold down the button and MD PLAY button, and press the

POWER button to enter the test mode.
When an MD is loaded, "AUT YOBI" will appear.
Press the MD PLAY button.
(4) Indication of version.

[ t s m

(5) Press the CD PLAY button 7 times.

[ E E P R O M S E T ]

(6) Perform the operation shown in the "EEPROM setting mode

chart", compare the indication with the EEPROM data list, and

make a setting according to the EEPROM data list, using VOL

UP botton or VOL DOWN button.
(7) Set the temperature reference value.

(Refer to "Temperature reference setting procedure".)
(8) The setting must conform to the EEPROM data list.
(9) Press the PRE-EQ button to write the data into the EEPROM.

e ]

EEPROM version (c to z)
Microcomputer ROM version
Model code

2. Temperature reference value setting procedure

(to be executed at room temperature within 21 to 29°C)

(1) Test mode stop state.

[ t s m

(2) Crrect temperature depending on ambient temperature according

to the following table.

e ]

For MD-X5

Ambient temperature

- 0.9 °C ~ + 2.7 °C -0 6 H

+ 2.7 °C ~ + 6.3 °C -0 5 H

+ 6.3 °C ~ + 10.0 °C -0 4 H
+ 10.0 °C ~ + 14.5 °C -0 3 H
+ 14.5 °C ~ + 18.2 °C -0 2 H
+ 18.2 °C ~ + 22.3 °C -0 1 H
+ 22.3 °C ~ + 26.3 °C ± 0 H
+ 26.3 °C ~ + 30.3 °C +0 1 H
+ 30.3 °C ~ + 34.6 °C +0 2 H
+ 34.6 °C ~ + 39.0 °C +0 3 H
+ 39.0 °C ~ + 42.8 °C +0 4 H

An example: When ambient temperature is 22°C and meadured

(3) Press the CD PLAY button 7 times.

[ E E P R O M S E T ]

(4) Press the MD PLAY button 1 times.(For MD-X5)

[ F o c u s ]

(5) Press the CD PLAY button 4 times.

[ T e m p ]

(6) Press once the MD PLAY button.

[ T E M P

: Measured temperature, : Temperature setting

(7) Set temperature to the value determined above, using the

VOL UP or VOL DOWN button.

(8) Press the MD STOP button.

[ T e m p ]

correction

temperature is 73H
Temperature setting = 73 H - 01 H

* When the measured temperature fluctuates between
two values, take lower one (if temperature fluctuates
between 73H and 72H, take 72H).

]

For MD-X5H/MD-X5W

Ambient temperature correction

+ 12.2 °C ~ + 15.8 °C -0 3 H
+ 15.9 °C ~ + 19.6 °C -0 2 H
+ 19.7 °C ~ + 23.2 °C -0 1 H
+ 23.2 °C ~ + 26.8 °C ± 0 H
+ 26.9 °C ~ + 30.7 °C +0 1 H
+ 30.8 °C ~ + 34.3 °C +0 2 H
+ 34.4 °C ~ + 37.9 °C +0 3 H

= 72 H

MD-X8/X8H/X8W

MD SECTION (See the MD-X8/MD-X8H/MD-X8W service manual, page 17.)

When the combination consisting of the pickup mechanism and the PWB is changed, enter the TEST mode, make a preliminary
automatic adjustment and then a full automatic adjustment. Then store the adjustment data in the EEPROM.
When the EEPROM is replaced, enter the TEST mode and write the data settings into the EEPROM. Then, make a preliminary
automatic adjustment and a full automatic adjustment. Finally, store the adjustment data in the EEPROM.

• Note

Remove the MD unit for repeir, and after installing it in the set, be dure to reset it and ascertain that reset has been done.
Resetting procedure (1) Unplug the AC cord from the socket, and hold down the RESET button provided at the rear side

for more than 10 seconds.
(2) Once set the TEST MODE (holding down the TEST MODE (X-BASS button) and button
together, press the POWER button), and then turn off power.

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