Philips MX3900D Service Manual page 95

Blockdiagram
Location of switches
10-3
+5V
A
GND
HOME SW
B
GND
OPEN SW
C
GND
UNLOAD SW
D
LOAD SW
GND
CLOSE SW
ADDRESS1 SW
E
GND
ADDRESS2 SW
ADDRESS3 SW
MOTOR BOARD CONTROL BOARD
+5V
SWITCH
+5V SWITCH
3
2
HOLDER HEIGHT COLLECTOR
DISC SENSOR COLLECTOR
1
HOME SW HOME SW
4
OPEN SW
5
HOLDER HEIGHT COLLECTOR
6
OPEN SW UNLOAD SW
7
ADDRESS1 SW
8
LOAD SW
UNLOAD SW
9
ADDRESS2 SW
10
CLOSE SW
11
LOAD SW ADDRESS3 SW
12
CLOSE SW
+A OPAMP
2 7803
TCA0372
ADDRESS1 SW
5
3
ADDRESS2 SW 6
13
ADDRESS3 SW
7
16
1
8
TRAY
MOTOR
+A OPAMP
7805
2
LIFT
TCA0372
MOTOR
8
1
7
15
6
14 3
5
1801
10-3
7801
8
9
7
10
6
11
5
19
TRAY_IRQ
12
4
16
I2C_SCL
13
17
I2C_SDA
27
Micro Controller
RST
24
TMP87CA409A
28
VDD +5V
V ST
REF
+A
23
26
V REF
+5V
21
OSC.
1 2
1800
CST 8M
Pin 1..3 not used!
1802
4
Tray_IRQ
5
Tray_I2C_SCL
6
Tray_I2C_SDA
7
µC_RESET
8
9,10
OPAMP
+A
11
+5V ST
7800
V
REF
SWITCH
7806
Blockdiagram 5DTC Control Board 2002-09-05 DVD Version