53
SC-LX82
5
6
7
8
5
6
7
8
A
B
C
D
E
F
DIGITAL MAIN ASSY
E
DIGITAL MAIN Power Supply Failure Detection
Item
Purpose
Detection Method
Status of Equipment
Warning Indication
Remarks
DIGITAL
MAIN
power
supply
failure
detection
(*1) Conditions when XVDDERR becomes "L"
1. Q1997 turns ON : When V+6DDD becomes higher than the setting value, Q1997 becomes ON.
2. Q1998 turns ON : When V+5_DDD becomes higher than the setting value, Q1998 becomes ON.
3. Q1999 turns ON : When V+13_UN becomes lower than 3.8 V, Q1999 becomes ON.
When PWRGD of IC1900 becomes low (V+5HD becomes lower than the setting value), Q1999 becomes ON.
When PGOOD of IC1930 becomes low (V+1R8_HHH or V+3R3_HHH drift from the setting value), Q1999 becomes
ON.
When V+6_DDD becomes lower than 3.8 V, Q1999 becomes ON.
Detect abnormal
voltage in the
Digital Power
Supply circuit
Detect when XVDDERR
port becomes "L" (*1).
(IC8001 70 pin)
Shuts down
Blinks Center Blue LED
During Standby mode, simultaneously press and hold the "
↓
" and "MULTI-ZONE ON/OFF" keys
for 5 seconds.
[How to Enter Release Mode]
V+5R6_U
D1997
1SS352
R1999
4.7k
V+13_UN
PWRGD
IC1900
PGOOD
IC1930
D1998
DAP202U
RN4903
Q1999
RN4903
Q1999
D1999
UDZS5R6(B)
R1997
1k
R1998
100
C1999
NM
C1998
0.1u/10
C1997
0.1u/10
Q1998
2SC4081(QR)
GNDD
R1996
4.7k
D1996
1SS352
Q1997
2SC4081(QR)
C1996
NM
R1995
100
R1994
1k
D1995
UDZS6R8(B)
R1988
NM
R1989
NM
C1991
NM
Q1996
NM
D1994
NM
V+13_UN
V+5_DDD
V+6_DDD
Содержание SC-LX72
Страница 10: ...10 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 2 2 PANEL FACILITIES 1 Front Panel ...
Страница 11: ...11 SC LX82 5 6 7 8 5 6 7 8 A B C D E F 2 Display ...
Страница 12: ...12 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 ...
Страница 13: ...13 SC LX82 5 6 7 8 5 6 7 8 A B C D E F 3 Rear Panel ...
Страница 14: ...14 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 ...
Страница 15: ...15 SC LX82 5 6 7 8 5 6 7 8 A B C D E F 4 Remote Control In case of SC LX82 ...
Страница 16: ...16 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 ...
Страница 17: ...17 SC LX82 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 18: ...18 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 5 Remote Control In case of SC LX72 ...
Страница 19: ...19 SC LX82 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 42: ...42 SC LX82 1 2 3 4 A B C D E F 1 2 3 4 SIDE A DSP ASSY B g p r t o q s b a Z X V D E G H e l c l j n A F ...
Страница 161: ...161 SC LX82 5 6 7 8 5 6 7 8 A B C D E F ...