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9 Self Diagnosis Display Function
This unit is equipped with the self diagnosis display function, which alarms faulty operation with error code. Use this function during
servicing.
9.1. Automatically Displayed Error Codes
An error code automatically appears on the display (LCD) when faulty operation is detected. Refer to Fig. 9.1.
Fig. 9.1
9.2. Display Details
Refer to the following table.
LCD display
Symptom
Cause and Remedy
OVERLOAD
Speaker short, amplifier failure
Speaker short and failure in power
amplifier, pre-amplifier circuits. Check for
faulty parts and replace with new parts if
necessary.
Humidity protection activated
F70
Communication error between sub micro-
processor and its peripheral LSI
Failure sub-micro processor and its
peripherals LSI. Check for faulty parts and
replace with new parts if necessary.
F76
When the power is turned on, the unit
power automatically turns off; the power
cannot be turned on.
Failure in the power circuit system of the
unit. This may happen when the direct
current electricity is supplied to speaker
terminals. Check for the above and replace
with new parts if necessary.
9.3. Returning to Normal Display
Press the POWER button on the unit to exit the function. The power is turned off.
9.4. Overload/Shutdown Detection intenal Condition
It detects OVERLOAD, POWER MALFUNCTION with [THRM_DET], [SHORT_DET] and [DC_DET] input port. It detects the
following condition depending on the input of the port as below table.
(H: DC ± 5V / L: DC ± 0V)
PROT
Detection of malfunction
Display and operation
SHORT_DET
THRM_DET
DC_DET
H
L
H
Normal
-----
L
L
H
Speaker Short, Malfunction of Amplifier
[OVERLOAD] / POWER OFF
L
H
H
Detection of THERMAL PROTECTION
-
-
L
Detection of POWER MALFUNCTION
[ _ _ _ F76 _ _ _ ] / POWER OFF
9.5. Overload/Thermal Detection Display
When overload is detected, automatic POWER OFF will occur. But if any key on the remote control other than the [POWER] key
is pressed before that (including the [HELP] key), the scroll display will show [SWITCH_OFF_POWER]. Then, 1 second after
display of message, [OVERLOAD] will be shown on the scroll display.
9.6. Activating Self Diagnosis Function (Servicing Mode)
This mode can be used during servicing.
28
SA-XR55E / SA-XR55EB / SA-XR55EG
Содержание SA-XR55E
Страница 5: ...2 Caution for AC Mains Lead 5 SA XR55E SA XR55EB SA XR55EG ...
Страница 8: ...7 1 Main Unit 7 Operating Instructions 8 SA XR55E SA XR55EB SA XR55EG ...
Страница 9: ...7 2 Remote Control 9 SA XR55E SA XR55EB SA XR55EG ...
Страница 10: ...7 3 Home Theater Connections 7 3 1 TV and DVD Player 10 SA XR55E SA XR55EB SA XR55EG ...
Страница 11: ...11 SA XR55E SA XR55EB SA XR55EG ...
Страница 12: ...7 3 2 Speakers 12 SA XR55E SA XR55EB SA XR55EG ...
Страница 13: ...13 SA XR55E SA XR55EB SA XR55EG ...
Страница 14: ...7 3 3 AC Power Supply Cord 14 SA XR55E SA XR55EB SA XR55EG ...
Страница 15: ...7 4 Other Connections 15 SA XR55E SA XR55EB SA XR55EG ...
Страница 16: ...16 SA XR55E SA XR55EB SA XR55EG ...
Страница 17: ...17 SA XR55E SA XR55EB SA XR55EG ...
Страница 111: ...18 1 Cabinet Parts Location 18 1 1 Cabinet 111 SA XR55E SA XR55EB SA XR55EG ...
Страница 112: ...112 SA XR55E SA XR55EB SA XR55EG ...
Страница 113: ...113 SA XR55E SA XR55EB SA XR55EG ...