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Service Manual
Auto diagnosis feature
This receiver incorporates a new auto-diagnosis
feature. With this new feature will be easier for the
technicial 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 detected by 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 Table 3.
Please use this feature effectively especially for
intermittent problems.
Table 3: SOS of front LED
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.
NUMBER OF
FLASHES
POSSIBLE CIRCUIT
1
+140
2
LOW DC
3
CONVEREGENCE
4
HHS
5
IC4011
6
IC4018