Sharp MD-X7H Service Manual page 53

MD SECTION
• Note
Remove the MD unit for repeir, ansd after installing it in the set, be dure to reset it and ascertain that reset has been done.
Resetting procedure
1. Preparation for adjustment
Test disc
Type
1 High reflection disc TGYS1 (SONY)
2 Low reflection disc Recording minidisc
3
Extension Cable (See Fig. 17)
1 Extension PWB for servicing
2 Extension Connector (2 Pin)
3 Extension Connector (6 Pin)
4 Extension Cable (5 Pin)
3 Extension Cable (28 Pin)
5Pin extension flat cable
QCNWK0109AFZZ
6P-2P extension connector
QCNWK0107AFZZ
2. Test mode
Test mode setting method
1. Holding down the
(State A is changed to state B .)
2. Insert the playback disc 1 (high reflection disc) or recording disc 2 (low reflection disc). (State C is set.)
Thus, the test mode state is set.
A tsm e
TEST STOP state
B EJECT
TEST
C AUT YOBI
TEST
Entering the specific mode
Whenever the CD (PLAY/PAUSE) button is pressed, the mode is changed.
AUTO pre-adjustment
EEPROM setting
• Canceling the test mode
When the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set.
(1) Unplug the AC cord from the socket, and hold down the RESET buttonm provided at the rear side
for more than 10 seconds.
(2) Once set the TEST MODE (holding down the TEST MODE (X-BASS botton) and
together, press the POWER button), and then turn off power.
Test disc
Head Adjusting transparent RRCDT0103AFZZ
Type
MD MAIN PWB
CNP1252
CNP1601(Bottom side)
CNP1602
CNP1603
CNS1101
CNP1604(Bottom side)
+ button and MD (PLAY/PAUSE) button, press the POWER button.
: TEST MODE
(When the MD
is restored. To restore C again, press the CD
button.)
AUTO adjustment
MANUAL adjustment
Part No.
RRCDT0101AFZZ
UDSKM0001AFZZ
Part No.
RUNTK0457AFZZ
QCNWK0059AFZZ
QCNWK0107AFZZ
QCNWK0109AFZZ
QCNWK0108AFZZ
2Pin extension connector
QCNWK0059AFZZ
From
motor
From mecha-
nism switch
PWB
28Pin extension flat cable
Extension PWB for service
QCNWK0108AFZZ
(RUNTK0457AFZZ)
Fit the extension PWB for service to the mechanism
Figure 17
represents version of MD microcomputer.
(STOP) button is ressed in the C state, the indication A
RESULT Pre-adjustment
RESULT MANUAL pre-adjustment
– 17 –
From Magnetic Head
From Optical
Pickup Unit
(PLAY/ PAUSE)
MD-X8H
botton