Philips MC-77/22 Service Manual page 52

Technical remarks
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10-10
1804 B2 2703 B5 3771 F4 3775 F4 3779
1805 E1 2704 B5
3772 E4 3776 E4 3780
2700 E3 2706 B4 3773 E4
3777 E4 3781
2701 D3 2712 E3 3774 D4 3778 E4 3782
1 2
3DTC-mainboard
part 3
A SW_INFO
7813
HEF4094BT
10
9
1804
SW2
1 8002 1 6804 12
CARRIAGE EXTRA
Q6
SW3
2 13
2 6805
CARRIAGE HOME Q6
B
3 3 11
Q7
SW5
4 14
4 6806
CARRIAGE NUMBER
Q3
SW4
5 5 6807 7
CARRIAGE NUMBER Q4
SW6
6 6
6 6808
DRAWER OPEN/CLOSE
Q2
SW7
7 7 5
6809
SLIDER FORWARD
Q1
SW8
8 4
8 6810
SLIDER REVERSE
Q0
BAS316 (7x)
EH-S
C
SRG8
D
Motor Driver
VDD
+ 16
+
14,15
1805
1 + 8003 1
-
_
13
CARRIAGE
2
E 2 -
M
MOTOR
3 3
-
DRAWER
12
4
4 +
MOTOR _
M
+
EH-S EH-S 10,11
-
+ 9
3,4,8
7815 TDA7073A
F
. . . V DC voltages measured in
PLAY MODE
with following conditions:
V EVM
"+10V" = 10V
"+5V" = 5V
1 2
10-10
D4 3783 B6 3788 A4 6804 B2 6808
B3 3784 F4 3789 B4 6805 B2 6809
E4 3786 B3 3790 B5 6806 B2 6810
E4
3787 F5 3791 B5 6807 B2 6811
3 4 5
Changer Control Logic
+10V
3788
5.2V
8
220R
3789
5.2V
220R
5.2V
7814
M62320FP 16 15 14
5.2V 3 SDA
2
D
I 2 C BUS CHIP SELECT
TRANSCEIVER
3 5.2V 2 SCL
SHIFT
1
REG
SO
STB
15 5.2V 5.2V 13 VDD 8 8 8
EN1
PWR
OUT I/O IN
8 GND RES
DATA LATCHES
16
8 8 8
I/O PORT
3779
10V
+10V 12 11 10 9 7 6 5
3R3
to 7801 on part 1 EQSEL
5
3774
18K
1
3776
22K
2
3778
18K
3781
15K
6
3772
56K
7
3784
15K
3DTC Mainboard Sheet3 2001-11-15
3 4 5
B2 7813 A3
C2 7814 C5
C2 7815 F2
B3
6
A
SW_INFO
SHR_CL
SHR_DATA
B
C
1
4
D
E
F
6