Pioneer VSX-321-K-P Service Manual page 38

1
TEMP (AMP overheat) error detection
A
For detection of a TEMP error, the unit monitor THER_DET (PROTECT2) signal. If a TEMP error is detected,
the processes shown below will be performed. The processes shown below are rough operational specifications and are
not the actual commands from the mounted components.
After a TEMP error is detected, the count of protection activation detections will be updated.
THER_DET (PROTECT2)
Counter: Temp2
PL2_1 (71 pin)
(THER_DET from AMP Assy)
B
Normal Operations
*1
Is THER_DET
detected?
Yes
Is the VOL value 5
or less?
C
No
Deduct 3 from the current VOL
value. Have "TEMP" flashing
on the FL display for 3 sec.
Prohibit detection of
THER_DET for 2 min.
Detection of THER_DET
No
is resumed after 2 min.
Is THER_DET detected?
D
*1: The detection interval must be 1 sec or less.
E
F
38
1
2
No
Yes
POWER OFF (STBY)
Yes
HTP-071
2
3
3
4
4