Ic-Innenschaltpläne - Grundig Apollo 42 Service Manual

GRUNDIG Service
IC-Innenschaltpläne / IC Block Diagrams
EN29LV160A
RY /BY #
Vc c
B lock Protect Sw itches
Vs s
E rase V oltageGenerator
State
Control
WE #
Program Vo ltage
Generator
Command
Register
CE #
OE#
V cc Detector Ti mer
A0 -A 19
Sound IF1
De-
ADC
modulator
Sound IF2
2
I S1
synchron.
2
I S
2
I S2
asychron.
2
I S3
2
I S
MSP44x8G
SCART1
SCART2 SCART
DSP
SCART3
Input
ADC
Select
SCART4
MONO
1
OUTA
2
INA(neg)
3
INA(pos)
4
V SS
DQ0-DQ1 5 (A -1)
Input/Output Buf fers
ST B
Chip En able
Output E nable
Lo gic
Y-De coder
ST B
X- Decoder
Main
Pre-
Sound
processing
Processing
Aux
Sound
Prescale
Processing
DAC DAC
Prescale
DAC
TDA1308(A)
8
V DD
7
OUTB
6
INB(neg)
5
INB(pos)
MC34063
8
Drive
Collector
7
I
pk
Sense
Data Latch
6
V
CC
Y-Ga ting
Cell M atrix
5
Comparator
Inverting
Input
Main
DAC
Channel
Aux
DAC
Channel
2
I S
SCART1
SCART
Output
Select
SCART2
2 - 39
S Q
Q2
Q1
R
100
I
pk
C
T
Oscillator
Comparator
1.25 V
+
Reference
−
Regulator
(Bottom View)
PI3V512
A
Y
I
A
A
I
Y B
B I
B
I
C
Y
I
C
Y
D D
I
C
I
D
I
E
Y
I
E
E
I
SEL
PI5V330
1
S A
2
S A
1
S B
2
S B
1
S C
2
S C
1
S D
2
S D
DECODER/DRIVERS
EN IN
Chassis PE
1
Switch
Collector
2
Switch
Emitter
3
Timing
Capacitor
4
GND
0
1
0
1
0
0
1
1
0
1
D
A
D
B
D
C
D
D