6-1
6-1
FRONT - CONTROL BOARD
1400
1404
1405
9
1
1403
1
19
SA_IN
PO
WER DO
WN
ST
ANDBY (LO
W_PWR_CTRL)
TU_CE/MPX
TU_D
A
T
A
TU_CLK
TU_STEREO
1
1
8
4
1415
4
1
1418
4
1
µ
P_RESET
µ
P_FRAME
TRA
Y
_I2C_SD
A
µ
P_D
A
T
A
TRA
Y
_I2C_SCL
TRA
Y
_IRQ
F2
+5V6_ECO
+5V6
-33V
-33V!
AM_NTC
I2C_D
A
T
A
I2C_CLK
7406
1401
RESET
EEPROM
RESET
12 MHz
+
µ
P
+5V6
+
µ
P
+
µ
P
5
6
8
+
µ
P
F1
+D
RDS
DECODER
SAA6581T
7407
2C_DATA
I2C_CLK
7408
I2C B
U
S
I2C BUS
7403
M I C RO P RO C E S S O R
T M P 8 8 C U 7 7 Z F
VDD
VKK
VSS
V
ASS
V
AREF
20
32 51 88
31
92
29 90
89
91
93
94
30
87
22
7402
F2
F1
-33V
5V6
1
58
KEY2
WL_IRQ
RESET FRONT
WL_I2C_CLK
WL_I2C_DATA
not used
POWER ON
KEY2
µ
P_CLK
1402
32.768kHz
KEY MATRIX
KEY MATRIX
18
23
19
24
KEY1
JOGVOL_B
KEY0
JOGVOL_A
STB
D
1
EN1
SRG8
16
15
1
3
2
4
5
6
7
14
13
12
11
9
10
8
74HC4094D
PORT EXPANDER
Intensity Lightbar top
full
half
7451
+5V6
+5V6
USB
+5V6
6452
CD
+5V6
6455
TUNER
+5V6
6451
AUX
+5V6
6454
PC LINK
+5V6
6453
VOLUME
1425
STANDBY
+5V6_ECO
6401
7450
7452
+D
+5V6_ECO
+uP
+5V6
+C
PROTECT
COMBI BOARD
1022
1
7
1020
1
2
1012
9
1
1026
1
19
1449
4
1
1
4
1014
HEAD-
PHONE
1448
p
HP_R
HP_DET
HP_L
HP_RIGHT
HP_DET
HP_LEFT
SOURCE
SELECTOR
VOLUME I
SUR
SUR
SOUND
VOLUME II
7508
Source Selector & Soundprocessor
I2C_CLK, I2C_DATA
I
2
C Control
5, 24
17
12
7, 22
22
14, 15
1
27
28
3, 26
4, 25
6, 23
8
21
Power Supply
+12V_A
+12V_A
+12V_M
-VKK
WL PC LINK
TUNER
AUX
CD
LINE_L, R
LINE_L
SPECTRUM
ANALYZER
LINE_L
LINE_R
LEFT
RIGHT
1013
1015
1
8
+12V_A
+5V_CD
+12V_M
TU_LEFT
TU_RIGHT
TU_CLK
TU_STEREO
TU_DATA
TU_ENAB/MPX
FILTER
LINE_R
FILTER
AUX IN
TU_CE/MPX
SA
not used
TU_D
A
T
A
TU_CLK
TU_STEREO
PO
WER DO
WN
LO
W_PWR_CTRL
to/from 1011
to/from 1012
15
1
CD_LEFT
CD_RIGHT
TRAY_I2C_SDA
TRAY_I2C_SCL
TRAY_IRQ
uP_RESET
uP_FRAME
+5V_CD
uP_CLK
uP_DATA
µ
P_RESET
µ
P_FRAME
TRA
Y_I2C_SD
A
µ
P
_
D
ATA
TRA
Y_I2C_SCL
TRA
Y_IRQ
µ
P_CLK
F2
+5V6_ECO
+5V6
+5V6
+12V_A
-AMP
+AMP
-33V
F1
I2C_D
A
T
A
I2C_CLK
NTC
OVERVOLTAGE
PROTECTION
1010
10
1
1011
7
1
+AMP
-VKK
F1
F2
+5V6_ECO
-AMP
+D
+D
+12V_A
+12V_M
+D2
PO
WER DO
WN
NTC
LO
W_PWR_CTRL
LOW_PWR_CTRL
I2C BUS
HEADPHONE AMPLIFIER
NJM4556AM
NJM4560M
7400
MUTE_HP
V1L+7,5V
+AMP
V1L+7,5V
V1L
-37V
+5V
+5V
-45V
-37V
-45V
-AMP
+12V_A
-45V
OFF
ON
OFF
ON
Analog Pre-amp.
DC
speaker out
Modulator
Driver
Power-amp.
Level
shifter
Level
shifter
Square
wave
Oscillator
analog audio signal
f= 20Hz ...20kHz
amplified analog audio signal
f= 20Hz ...20kHz
square wave
500kHz
duty cycle 1:1
square wave
500kHz
variable duty cycle
0V
5V
0V
5V
square wave
500kHz
variable duty cycle
-45V
+52V
square wave
500kHz
variable duty cycle
-45V
+45V
square wave
500kHz
variable duty cycle
-45V
-39V
output filter
1201
1307
7243
DC output
PROTECTION
FAN
CONTROL
+5V6
D
0
13
2
3
4
5
6
7
9
10
11
12
8
M62320FP
AMP_OFF
AMP_MUTE
7406
MUTE_SW
HP_DET
MUTE_HP
MIC_DET
OZ_SW
AMP_RELAIS
CD_ON
+5V6
1
2
1401
1104
FAN
+12V_M
Block diagram MCW770, 190704
+D2
+5V6
+5V_AMP
I2C B
U
S
CDC KEY BOARD
KEY2
KEY MATRIX
1
4
1450
6461
1445
4
1
1461
4
1
6460
Lightbar top - left
Lightbar top - right
1
8
1305
1307
1
7
1500
1
2
1206
1462
1
4
1
4
1
4
1
4
1207
1463
WIRELESS LAN CARD
WESSLI BOARD
NC
NC
NC
6463
6462
7206
7207
+12V
+12V
Lightbar WL
Communication
Light WL
1
FM
Osc.
FM
Mixer
AM
Mixer
AM
Osc.
AM IF
IF1
IF2
FM
Det.
AM
Det.
3
39
37
33
RADIO IC
TEA 5757H
TUNER BOARD
ECO 6
Systems / non Cenelec
10
18
11
14
15
24
right
right
left
left
stereo
VCO
41
40
36
19
32
44
25
Stereo
Decoder
AFC
AFC +
AFC -
4
4
AGC
Pre-
scaler
Multi-
plexer
Charge
pump
Stabilizer
CONTROL
Reference
Oscillator
29
28
27
clock
data
enable
P1
P0
31
30
programmable
output ports
V
Loop
V
Loop
V
Loop
V
Loop
V
Loop
2
6
5
43
C
D
450kHz
450kHz
450kHz
20
75kHz
V
Stab
A
V
Stab
B
V
Stab
B
V
Stab
A
V
Stab
B
10,7 MHz
10,7 MHz
35
9
Vdd Vcc1
7
23
V
Stab
A
V
Stab
B
38
34
22
Vcc2
8
LF filter
RDS
(MPX)
RDS
(MPX)
stereo
clock
data
enable
Version
1120
1
8
FM
Frontend
AM
Frontend
AM-FRAME
AERIAL
B
1103
1101
(1102)
A
FM
MPX
buffer ampl.
5
Discriminator
10,7 MHz
Vdd
Vcc1
Vcc
Vcc2
AM-RF
AM-Osc.
FM-Osc.
FM-RF
FM-IF 1
FM-IF 2
AM-IF 1
AM-IF 2
AM-AFC
3
2
5DTC - MODULE
for details see
separate block diagram in chapter 10
1824
1
15
+5V
+A
LEFT
RIGHT
TRAY_I2C_SDA
TRAY_I2C_SCL
TRAY_IRQ
uC_RESET
uP_FRAME
uP_CLK
uP_DATA
0201
10
1
1210
1204
7
1
-VKK
F1
F2
+5V6_ECO
PO
WER DO
WN
NTC
LO
W_PWR_CTRL
+AMP
-AMP
+D
+D2
MAINS BOARD
BLOCK DIAGRAM