Grundig AD 182 M SAM, Руководство по обслуживанию

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AD 182 M / AD 182 M SAM
8 GRUNDIG Service
Adjustment Preparation Adjustment Procedure
2. Tape Drive
Test equipment: Frequency counter, Test Cassette 448A (Part No. 35079 023 0000)
Tape Speed
Adjustment Preparation Adjustment Procedure
Insert Test Cassette 448A and play 3150Hz part.
Connect a frequency counter to loudspeaker outputs. With the ´Motorpoti´ adjust for 3150Hz
±
100Hz.
Motorpoti
PCB
Abgleichvorschriften / Adjustment Procedures
10. IF Center
frequency
11. Stop Generator
12. Field strength
13. Stereo Crosstalk
14. FM search level
stop
Connect a Test Generator to aerial input; Frequency
98.0MHz; f
mod
= 1kHz; Hub = 22.5kHz; E´ = 1mV (60dB
µ
V).
Connect an AF Voltmeter to FMP101.
Call up the extended expert mode (see above).
With the buttons
o
resp.
p
select
QUARZ
.
Connect a sweep generator to aerial input. Center fre-
quency 95.0MHz;
∆
f =
±
100kHz; no modulation;
E´ = 100
µ
V (40dB
µ
V);
Connect an Oscilloscope to FMP104.
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 (-).
Connect a Test Generator via a Stereo Coder to aerial
input; Frequency 95.0MHz; f
mod
1kHz at 22.5kHz dev.; Pilot
19kHz at 7.5kHz dev.; RDS 57kHz at 1.2kHz dev.; E´ = 1mV
(60dB
µ
V); modulate only the left channel.
Connect an AF Voltmeter to loudspeaker outputs.
Call up the extended expert mode (see above).
With the buttons
o
resp.
p
select
STERE
.
Connect a Test Generator to aerial input; Frequency
95.1MHz; 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
FM DX
.
With the station buttons 4 resp. 5 select
FM LC
.
With the station buttons 4 resp. 5 set for minimum AF
voltage.
Press button EXP briefly (display shows
QUARZ OK
).
Align L 101 for a symmetrical stop impulse.
95.0MHz
+5V
0V
∆
f
≤ ±
45kHz
Adjust with CR26 for +400mV
±
10mV.
With the station buttons 4 resp. 5 set for minimum AF
voltage on the right channel.
Press button EXP briefly (display shows
STERE OK
).
Apply a signal with E´ = 10
µ
V (20dB
µ
V). Press button EXP
briefly (display shows
FM DX OK
).
Apply a signal with E´ = 250
µ
V (48dB
µ
V). Press button
EXP briefly (display shows
FM LC OK
).
Service hint:
Mask Version 1 (Imprint on the processor CIC801 „FIAT H2/01“):
Processor CIC801 part no. 83058 780 5900 together with EEPROM CIC802 part no. 83059 580 1600.
Mask Version 2 (Imprint on the processor CIC801 „FIAT H2/02“):
Processor CIC801 part no. 83058 780 5700 together with EEPROM CIC802 part no. 72008 538 1700.
Mixed components will not work!