Fm Tuner Check - Sony STR-DH550 Service Manual

MHL VBUS TEST MODE
To display MHL VBUS status
Procedure:
1. Press the [ / ] button to turn on the main power.
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2. While pressing [DISPLAY] button, press and release the
[MUSIC], [MOVIE], [A.F.D./2CH] button in order, the
message "VBUS STAT" appears.
3. Press the [ ] key of the remote commander to check the
items.
Items
No Error
Current Limited
Current Stopped
Display
N O E R O R
C U R L I M I T D
C U R S T O P P D
SECTION 4

FM TUNER CHECK

FM AUTO STOP CHECK
set
Procedure:
1. Turn on the set.
2. Input the following signal from Signal Generator to FM
antenna input directly.
* Carrier Frequency: A=87.5 MHz, B=98 MHz, C=108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Use 75 ohm "coaxial cable" to connect SG and the set.
You cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3. Set to FM tuner function and scan the input FM signal with
automatic scanning.
4. Confi rm that input Frequency of A, B and C are detected and
automatic scanning stops.
The stop of automatic scanning means "The station signal is
received in good condition."
STR-DH550/DH750
generator
OUT (75 Ω)
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