Read Sharp XL-DAB9H (serv.man3) Service Manual online
XL-DAB9H
2 – 1
XL-DAB9H
Service Manual
CHAPTER 2.
ADJUSTMENTS
[1] ADJUSTMENT
1. TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• Check FM VT
• Check FM VT
Signal generator: 1 kHz, 40 kHz dev., FM modulated
• FM Mute Level
Signal generator: 1 kHz, 40 kHz dev., FM modulated
*1.Adjiust so that an output signal appears.
[2] How to check the version number of the
system microcomputer
system microcomputer
1. Turn the power off.
2. With holding down “PRESET SELECT” and “PRESET 2” buttons,
turn the power on.
3. The version number displays as below.
Version number display
Frequency
Display
Check
Point
Instrument
Connection
87.5 MHz
87.5 MHz
2.2V ± 1.0V
TP301
108 MHz
108 MHz
7.3V ± 1.0V
TP301
Frequency
Display
Adjusting
Parts
Instrument
Connection
98.00 MHz
(30 dB
(30 dB
µV)
98.00 MHz
VR351*1
Input: SO301
Output: Speaker Terminal
Output: Speaker Terminal
Figure 1 ADJUSTMENT POINTS
FE301
SO301
FM MUTE
LEVEL
LEVEL
VR351
IC303
IC302
20
C393
TP301
R350
R357
R356
MAIN PWB-A1
Ver.08C
← Version number of the system microcom-
puter
SHP_SER_V1.7.2
← Version number of DAB module
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