10-12
HDW-750/750CE V1
10-4. System Control Alignment
10-4-1. Battery Voltage Correction
Adjustment
This adjustment supplies accurate
+
12 V power voltage to
the DC IN connector. The Battery Voltage Correction
Adjustment is required when the FP-121 board is replaced.
Adjustment Procedure
1.
Set the switch S1-1/AT-143 board to the ON position.
2.
Set the MENU ON/OFF switch on the inside panel to
the ON position to start up the maintenance mode.
3.
Select “A90 : BATTERY CORRECTION”. The
message “FEED ACCURATE DC
+
12V, PUSH RE
TO ADJUST” appears.
4.
Press the rotary encoder to start adjustment.
5.
When adjustment is complete, the message “COM-
PLETE” appears. Then press the rotary encoder.
10-4-2. Antenna Tuning Frequency
Adjustment (Tele-File)
Adjustment Procedure
m
.
The adjustment frequency is 13.56 MHz.
.
Set the oscilloscope Filter and Bandwidth Limiter to
OFF. Check that the oscilloscope probe is already
calibrated.
1.
Insert a cassette on which the memory label is at-
tached.
2.
Connect TP103 with the frame chassis (metallic part)
of the unit with a shorting clip.
3.
Equipment :
Oscilloscope
Measurement point : TP101 (A-2)/CCM-45 board
Adjustment point :
CT101 (A-2)/CCM-45 board
Specifications :
A = Maximum amplitude
(9 Vp-p or more)
4
Equipment :
Oscilloscope
Measurement point : TP102 (A-2)/CCM-45 board
Specifications :
A
>
9 Vp-p
B
A
1
2
3
4
CT101
TP101
TP102
TP103
A
CCM-45 board (A side)
10-4. System Control Alignment
