Marantz PM-11S3, Service Manual

Page: 18 / 80

18
2.tHe PoWeR CAN Not Be tURNeD oN
(StANDBY LeD LIGHtS FLASH)
Do you have broken the F8510 is 8U-110131-4? Replace the F8510.
The defect of U8401 is considered.
When the power is turned on, LCD or lights?
Check each connector.
Is the voltage of +15V output to N8007(4pin) of 8U-110131-6?
Is the voltage of +24V output to JV22 of 8U-110131-6?
The defect of a power supply circuit from N8003 to U8401 on 8U-
110131-6 is considered.
Check for short circuits or blown on the parts.
YeS
YeS
Check voltage of N80078(5pin,6pin).
If L is that PROTECT 1, if L is the 5pin 6pin is PROTECT
2 is activated.
Refer to "PROTECTION MODE" (11 page) and check
applicable circuit.
If H is M_B_DOWN detection of both 8U-210120-1
Circuit may be faulty.
YeS
YeS
No
No
No
No
I O G
I O G
B E C
B
E C
8U-110131-6
方向有
方向有
方向有
+3.3VD +24VLA LGND +15VD
PROTECT1 PROTECT2
SPK SPKA SPKB
+24VLA
SPKA SPK SPKB LGND
PROTECT1
+30V -30V AGND
+24VLB
LGND +3VD
JV43
JV54
JV64
U8401
U8002
N8104
JV86
R0001
R0002
R0003
R0004
R0005
R0006
R0007
R0008
R0009
R0010
D8109
D8110
D8111 D8112
D8113 D8114
D8115 D8116
L8001
L8003
L8004
R8120
Z8001
L8005
R8121
Z8002
L8006
L8007
R8123
R8124
Z8005
Z8402
JV108
N8001
7.5
JV109
N8003
N8006
N8008
JV118
JV119
7.5
20.0
JV134
7.5
JV142
JV155
17.5 JV8
JV160
20.0
JV161
C8001 C8002
C8003
C8005
C8006
C8007
C8010
C8011
C8012
C8015 C8016
D8001
D8002
R8002 R8003 R8004
R8005
D8011 D8012
D8013 D8014
D8015
R8012
D8016
R8013
D8017
R8014
D8018
R8019
D8020
R8022
JV22
R8028
N8007
R8001
R8122
Z8006
Z8007
Q8007
Q8005
N8005
R8015
Z8003
Z8004
1
N8007
JV22