8 Auto diagnosis feature

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This receiver incorporates a new self diagnosis feature. With this new feature will be easier for the technician to detect the failures. There is a LED located by the keyboard on the front panel, this LED will start flashing when a failure is detectedby the circuits located in specific areas, depending on how many times the LED is flashing, this will tell you what circuit should be checked. Make a count of flashing and see the table shown below. Please use this feature effectively especially forintermittent problems.

SOS of front LED
FLASHES
POSSIBLE CIRCUIT
SOS
1
POWER+140
140 OCP
2
LOW B+ D.C.
SOS 2
4
HI VOLTAGE HHS
HHS
5
IC4511
GC2M
6
IC4518
GC2S
8
AUDIO AMP
SOS 4

AFTER THE COUNT

Proceed to check that area, verify what board is the problem located, this way the area to check will be reduced until the failure is found.


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