30
HTP-072
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Simultaneously holding the [ADVA
N
CD SURROU
N
D] and [STA
N
DBY/O
N
] keys on the
front panel pressed for 2 seconds will cancel Key Input Inhibition mode after a DC error
detection and turn the unit O
N
.
[Detailed explanations]
3.3 TEMP (AMP overheat) error detection
For detection of a TEMP error, the unit monitors both the THER_DET and OVERLOAD & DC_DET signals.
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.
FL Display
Description of Indications
Key Operation
3.4 How to cancel the status after detection of the DC error
(STA
N
DBY state)
(
N
ormal display)
usually
N
ormal display
Time (sec.)
[ADVA
N
CED SURROU
N
D]
+ [STA
N
DBY/O
N
] keys
(press and hold the keys
for 2 seconds.)
Counter: Temp2
PROTECT2
P2_2 (pin 70)
(THER_DET from MAI
N
Assy)
N
ormal Operations
Deduct 3 from the current VOL
value. Have "TEMP" flashing
on the FL display for 3 sec.
POWER OFF (STBY)
*1
*1: The detection interval must be 1 sec or less.
*2: If PROTECT 2 is detected while THER_DET detection
is prohibited for 2 min, the PROTECT 2 function will
be
activated.
Prohibit detection of
THER_DET for 2 min.
*2
Is THER_DET detected?
Is the VOL value 5
or less?
N
o
N
o
N
o
Yes
Yes
Yes
Detection of THER_DET
is resumed after 2 min.
Is THER_DET detected?
Counter: OVER / DC
PROTECT1
P0_3 (pin 85)
(OVERLOAD & DC_DET from AMP6 Assy)
PROTECT1 Function
<PROTECT1: Voltage at Pin 85>
N
ORMAL: 3.3 V
When ASO destruction (excess current) is detected: 0.83 V
When DC is detected: 1.45 V
<Operation upon detection>
When ASO destruction is detected: POWER OFF (STBY)
When DC is detected:
CASE 1 (Instantaneous detection [for less than 3 sec]): Speaker RELAY OFF
CASE 2 (Continuous detection [for 3 sec or longer]): Shutdown and flashing of the HDMI LED
(To turn the unit back O
N
again, simultaneous pressing of the two keys is necessary.
-> See "3.4 How to cancel the status after detection of the DC error".)
N
ormal Operations
MUTE O
N
and ALL Speakers/
Phones Relay are set to OFF.
*3
*3: The detection interval must be 1 sec or less.
Timer START is performed
for 3 sec.
DC detected?
Is ASO detected?
N
o
N
o
Yes
Yes
After 3 sec,
DC is rechecked.
Is DC detected?
POWER OFF (STBY) and
HDMI LED flashing.
Yes
POWER OFF (STBY)
N
o
If the AC power cord is plugged in while the AVR is prohibited from being O
N
because of DC detection, the HDMI LED will
flash at intervals of 500 msec.
Summary of Contents for HTP-072
Page 9: ...9 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 73: ...73 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 80: ...80 HTP 072 1 2 3 4 A B C D E F 1 2 3 4 C SIDE B CP2001 CP2000 Q2043 Q2041 IC2018 Q2038 ...
Page 81: ...81 HTP 072 5 6 7 8 5 6 7 8 A B C D E F C C D MAIN ASSY SIDE B CP2003 CP2006 CP2005 CP2200 ...
