Tuner Section - Sharp MD-M3 Service Manual

MD-M3/M1
MD SECTION
Test mode setting method
1. Holding down the MD FUNCTION button and FF(
(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 13 e : TEST MODE
STOP state
B EJECT
C AUT YOBI
Entering the specific mode
Whenever the SURROUND button is pressed, the mode is changed.
AUTO pre-adjustment
EEPROM setting
Cancel of test mode
To restore the usual state once reset.
*Before pressing the POWER button, be sure to perform the AUTO preliminary adjustment and the AUTO adjustment. Make
sure that they return a "COMPLETE" result.
*When the data of EEPROM was changed or the preliminary adjustment was performed again, be sure to press the POWER
button to write data in the EEPROM.
(Data is written in the EEPROM by pressing the POWER button.)
*When changing the EEPROM settings, write them into the EEPROM and then enter the test mode again. Perform the AUTO
preliminary adjustment and the AUTO adjustment. Then, write those into the EEPROM.

TUNER SECTION

• Test mode setting method
Holding down the TUNER button and PLAY/PAUSE button,
turn on POWER button switch. Frequency is set in the
memory (initial setting) as shown in Table 16.
)button, press POWER button switch.
represents version of MD microcomputer.
(When the STOP button is pressed in the C state, the
indication A is restored. To restore C again, press the
PRESET EQUALIZER button.)
AUTO adjustment
MANUAL adjustment
Preset No.
P01
P02
P03
P04
P05
– 16 –
RESULT Pre-adjustment
MANUAL pre-adjustment
Frequency Preset No.
87.50 MHz P06
108.00 MHz P07
90.00 MHz P08
106.00 MHz P09
98.00 MHz P10
Table 16 Initial setting of memory
RESULT
Frequency
522 kHz
1,620 kHz
603 kHz
1,404 kHz
990 kHz