Harman Kardon HD 990, Service Manual

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5
5
4
4
3
3
2
2
1
1
E E
D D
C C
B B
A A
SMPS BOARD
1254C
AC
AC
2
1
JP1
13
12
11
10
9
8
7
5
4
3
2
1
6
6
4
11
7
8
12
13
3
1
5
9
2
10
D+3.3V
+5VSTBY
D+5V
A+14.5V
GND
M+5V
D+5V
GND
A+5V
GND
GND
A-14.5V
GND
MAIN BOARD
5604C
3
1
2
STANBY
5VON GND
2 3 1
2 3 4 5 6 7 8 9
10
11
12 13 14
1
1 13 10 6
11
5 14 9 8 2 3 7 12 4
1 2 3 4 5 6 1 5 4 3 2
A+5V
D+3.3V
GND
GND
D+5V
STANBY
GND
GND
A-14.5V
5VON
GND
D+5V
M+5V
+5VSTBY
A+14.5V
GND
4
3
5
6
2
1
1
24
BUTTON
BOARD
5575C
VFD
BOARD
5576C
CN1
CN2
24 PIN CONNECTOR FOR SF-HD850G
CN2
CN5
CN4 CN3 CN1
LOAD-
LOAD+
TRAYOUT# GND TRAYIN#
SPIN- SPIN+ LIMIT# GND SLED+ SLED-
1
2
5
3
4
6
GND
RB5
RA1
IR
GND
REMOTE_IR
HD990 WIRING
DIAGRAM
NA
GND AC1 AC2
-29V
GND REMOTE_IR
VFD_STB
DATA/SDA
D5V GND
CLOCK/SCL
GND
IR
REMOTE_IR
GND
IR
RA1
RB5
GND
UPSIDE OF FRONT PANEL BOARD
UNDERSIDE OF FRONT PANEL BOARD
GND
NA
IR GND CLOCK/SCL GND D5V DATA/SDA VFD_STB REMOTE_IR GND -29V AC2 AC1
5577C
CN403
CN404
CN401 CN402
SF-HD850G
1 24
24 PIN CONNECTOR
Loader
6
5
4
3
2
1
1
2
3
4
5
HD990 V1.1
HD990 WIRING DIAGRAM
Custom
1 1 Friday, June 25, 2010
Title
Size Document Number Rev
Date: Sheet of
AC Power cord
HD 990
harman/kardon