Read Sharp SD-EX100H (serv.man7) Service Manual online
– 15 –
SD-EX100H
TEST MODE
Preset
Memory
Frequency
FM
Preset
Memory
Frequency
AM
M1
87.5 MHz
M6
522 kHz
M2
108.0 MHz
M7
1,620 kHz
M3
90.0 MHz
M8
603 kHz
M4
106.0 MHz
M9
1,404 kHz
M5
98.0 MHz
M10
990 kHz
Table 1 Memory setting
Figure 15-1 OUTPUT OFFSET LEVEL
CD SECTION
To clear registered stations
Canceling the test mode will clear all the preset data.
Canceling the test mode will clear all the preset data.
Adjustment for 1 bit amplifier output offset
voltage
voltage
Adjust VRA100 and VRA101 so that the voltage between the
positive and negative terminals of the speaker output terminal
(JK400) is within 0
positive and negative terminals of the speaker output terminal
(JK400) is within 0
±
5mV at AC 230V.
Electric
Voltmeter
JK400
AC 230V
UNIT
Output
Speaker
Terminal
Speaker
Terminal
+
–
VR : 0
Input:AUX
Input:AUX
Figure 15-2 ADJUSTMENT POINT
L-CH OUTPUT
OFFSET
OFFSET
R-CH OUTPUT
OFFSET
OFFSET
VRA100
VRA101
1-BIT AMP. PWB
Display
