AD 182 M / AD 182 M SAM
GRUNDIG Service
7
GB
Adjustment Procedures
1. Main Board
Test equipment: DC Voltmeter, Test Generator, AF Voltmeter, Stereo Coder, Sweep Generator, Oscilloscope
Alignments 2, 5 and 7 only for AD 182 M!
Calling up the ´extended Expert Mode´:
Switch off the set. Press and hold depressed station button 2 and switch on the set. Hold the station button 2 depressed for more than 5 seconds.
Press and hold depressed the EXP button for about 15 seconds until the display shows
FI-XX-MC
(
XX
= actual version). Press button TP for more
than a second. With the buttons
o
resp.
p
select parameter set 43 (display shows e.g.
43 192
). Press button TP briefly (Stereo symbol
)
lights
up). With the buttons
o
resp.
p
change the value to 201 (display shows
43 201
). Press button TP briefly (Stereo symbol
)
goes out). Press button
EXP for about 3 seconds (display shows
EXPERT
).
If you changed an other parameter by mistake you can find its correct value in the parameter table on page 9. The mask version is imprinted
on the processor CIC801.
Leaving the ´extended Expert Mode´:
Press button EXP for abt. 3 seconds. Press button TP for more than a second. With the buttons
o
resp.
p
select parameter set 43 (display shows
e.g.
43 201
). Press button TP briefly (Stereo symbol
)
lights up). With the buttons
o
resp.
p
change the value to 192 (display shows
43 192
).
Press button TP briefly (Stereo symbol
)
goes out). Press button EXP for abt. 3 seconds (display shows
EXPERT
).
1. MW Oscillator
2. LW Oscillator
3. AM IF
4. MW Bandpass
5. LW Bandpass
6. MW search level
stop
7. LW search level
stop
8. FM Oscillator
9. FM RF and IF
Adjustment
Preparation
Adjustment Procedure
MW;
Connect a DC Voltmeter to FMP705.
LW;
Connect a DC Voltmeter to FMP705.
Connect a Test Generator to aerial input; Frequency
1548kHz; no modulation; E´ = 100
µ
V (40dB
µ
V).
Connect a DC Voltmeter to FMP602.
Connect a Test Generator to aerial input; no modulation;
E´ = 100
µ
V (40dB
µ
V).
Connect a DC Voltmeter to FMP602.
Connect a Test Generator to aerial input; no modulation;
E´ = 100
µ
V (40dB
µ
V).
Connect a DC Voltmeter to FMP602.
Connect a Test Generator to aerial input; Frequency
990kHz; no modulation;
Call up the extended expert mode (see above).
With the buttons
o
resp.
p
select
LEV PROG
.
With the station buttons 4 resp. 5 select
MW DX
.
With the station buttons 4 resp. 5 select
MW LC
.
Connect a Test Generator to aerial input; Frequency
207kHz; no modulation;
Call up the extended expert mode (see above).
With the buttons
o
resp.
p
select
LEV PROG
.
With the station buttons 4 resp. 5 select
LW DX
.
With the station buttons 4 resp. 5 select
LW LC
.
FM;
Connect a DC Voltmeter to FMP705.
Connect a Test Generator to aerial input; Frequency
95.0MHz; no modulation; E´ = 100
µ
V (40dB
µ
V).
Connect a DC Voltmeter between FMP101 (+) and
FMP103 (-).
Align with L606A at 531kHz for 1.0V
±
50mV.
Check for 7.2V
±
0.5V at 1602kHz.
Align with L607AL at 153kHz for 1.3V
±
50mV.
Check for 5.0V
±
0.5V at 279kHz.
Align with L604A for maximum voltage.
Align alternating with C608A at 1548kHz and with L601A at
558kHz for maximum voltage.
Align with L602AL at 162kHz for maximum voltage.
AD 182 M: Apply a signal with E´ = 20
µ
V (26dB
µ
V).
AD 182 M SAM: Apply a signal with E´ = 10
µ
V (20dB
µ
V).
Press button EXP briefly (display shows
MW DX OK
).
AD 182 M: Apply a signal with E´ = 100
µ
V (40dB
µ
V).
AD 182 M SAM: Apply a signal with E´ = 50
µ
V (34dB
µ
V).
Press button EXP briefly (display shows
MW LC OK
).
Apply a signal with E´ = 20
µ
V (26dB
µ
V). Press button EXP
briefly (display shows
LW DX OK
).
Apply a signal with E´ = 100
µ
V (40dB
µ
V). Press button
EXP briefly (display shows
LW LC OK
).
Align with L06 at 87.5MHz for 1.6V
±
50mV.
Check for 6.3V
±
0.3V at 108MHz.
Align alternating with L03 and L04 for maximum.
Align with L05 for maximum.
Abgleichvorschriften / Adjustment Procedures