Circuit Diagram; Layout Diagram - Philips MC-M250 Service Manual

CIRCUIT DIAGRAM - SWITCH BOARD
1402 A3 1409 B3
1403 A2 1410 B2
1404 A2 1411 B2
1405 A1 1412 B1
1406 A1 1413 B1
1407 A1 1414 B1
1
KEY GROUP2
3427 3426 3425
5K6 3K3 2K2
A 1407 1406 1405
KEY GROUP1
3436 3435 3434
5K6 3K3 2K2
B
1414 1413 1412
1
LAYOUT DIAGRAM - SWITCH BOARD
12-1
1422 A3 3432 B3 T471 A3
3423 A3 3433 B2 T472 A3
3424 A2 3434 B2
3425 A2 3435 B1
3426 A1 3436 B1
3427 A1 T470 A3
2 3
0001
3424 3423
T470
1
1K5 1K
T471
2
1404 1403 1402 A
T472
3
EH-S
3433 3432
1K5 1K
B
1411 1410 1409
2 3
CIRCUIT DIAGRAM - CD99 MP3CD2002 BOARD (Part 2)
1820 D3 1824 E7 2843 B2 2846 B4
1821 F7 2811 E2 2844 B2 2847 E3
1823 D7 2842 D1 2845 B3 2848 D2
1 2 3
CD99 MP3CD2002 Board
CD Part sheet 2
A
2845
220p
3869
10K
B
3864
2
2,1V
DACRIGHT_neg
1
22K 2,1V
3867
2,1V 3
TDA1308T
DACRIGHT_pos
4
7810-A
22K
Vref_Audio
C
2850
220p
3876
10K
3873 6
2,1V
DACLEFT_neg
22K 7
2,1V
3874 2,1V 5
D
TDA1308T
DACLEFT_pos
8
22K 7810-B
4,3V
4,3V
Vref_Audio
Vref_Audio
E
+5V
+3.3V
F
G
H
I
DC voltages
V and waveforms
measured in
play mode
1 2 3
12-1
2849 D2 2853 F4 2857 F3 3864 B2 3868 B2
2850 C3 2854 E3 3838 E1 3865 D4 3869 B3
2851 D4 2855 E2 3840 B4 3867 B2 3870 B4
4 5 6
2846
3871
100R
10u
2851
3865
10u
100R
GNDA
7874
BC847B
5V
+10V
5V
uP_FRAME
to 1820
MP3-Interface
uP_DATA
uP_CLK
7875
33R
3,3V BC847B 4,3V
3880
150R
4V
3881
#
2842
SPDIF_GND uP_CLK
100p to 1824
uP_DATA
uC-Interface
3911
SPDIF_GND
uP_FRAME
100R
SPDIF_GND
3838
SPDIF
470R
from
to
PORE
7800
on
7800 2811
#
SILD
sheet1
on
47n
sheet 1
RAB
(CD10)
SICL
SDA
IIS_SCLK
to
7800
on
sheet 1
IIS_WCLK
(CD10)
AU_IIS_DATA
CD_IIS_DATA
+5V
#...for provision only
CD99 MP3CD2002 Board CD Part sheet 2 - 2002 05 07
4 5 6
3871 B4
3873 C2
3874 D2
7
A
B
C
6p-connector
1823
1
LEFT
2
D
GNDA
3
RIGHT
4
+5V
5
GND
6
+10V
FE-ST-VK-N
E
1824
5p-connector
1
uP_FRAME
2
GND
3
uP_DATA
4
uP_CLK
5
GND
6
+5V/doorsw
FE-ST-VK-N
F
1821
2
GND
1
doorswitch
EH-S
1820
1
GND
G
2
uP_CLK
3
uP_DATA
4
uP_FRAME
5
SPDIF_GND
6
SPDIF
7
CD10_RESETn
8
SILD
H
9
RAB
10
SICL
11
SDA
12
GND
13
IIS_SCLK
14
GND
15
IIS_WCLK
I
16
AU_IIS_DATA
17
CD_IIS_DATA
18
GND
19
+5V
7