Grundig GV 29 EURO Manuel De Service page 27

GV 29 EURO, GV 9300 EURO
Synoptique des circuits imprimés – Numérique / Block Circuit Diagram – Digital
Q3003,Q3004
ALWAYS 5V POWER DOWN DET
PS CTL
(TO PW-A)
POWER CTL
(TO PW-A)
IC305
INITIALIZE
RESET
IC302
+ 10 4
+
LOADING
LOADING MOTOR ML
MOTOR DRIVER
2 3
-
-
MECHANISM
ROTARY
MODE SWITCH
SW
Q3008
WAFEFORM SHAPE
TAKE-UP
REEL
SENSOR
Q3007
WAFEFORM SHAPE
SUPPLY
REEL
SENSOR
TAPE TOP SENSOR
TAPE END LED
TAPE END SENSOR
FL START SW/
ERASE PREVENTION
SWITCH
RR701
IR REMOTE CONTROL
RECEIVER
KEY IN 0 ~ KEY IN 3 26 KEY IN 0
OPERATION
29 KEY IN 3
KEY-MATRIX
B ~ K (KEY SCAN)
IC701
SEG A
A7401 (TM-1 BOARD)
SEG L
31 SEG A
22
DISPLAY 42 SEG L
NCS
SEGMENT
23
(FLD) SCK
G1 ~G9
6 G1
24
SDI
25
GRID 15 SDO
G9
HEATER+
FLD DRIVE
AND KEY SCAN
TUNER
(TU/IF BLOCK)
ANT
IN 19
SW1
20
SW2
23
10
AFT
S CLK
11
S DATA
21
A.OUT TU AUDIO NORM (TO AD-A)
24
V.OUT
VIDEO OUT(TO VA-A)
GRUNDIG Service
Circuits imprimés et schémas électriques / Layout of PCBs and Circuit Diagrams
37
80 OSCO
POWER DOWN X3002
14.32MHz
38
97
OSCI
POWER SAVE CONTROL
40
XI
10
X3001
POWER CTL
32KHZ
41
XO
40
X3I FSC
25 TO VA-A
RESET
41
X3O
6
ML-D
Q3005
50
VD IN FIL FILTER VD2
7
ML-S
49
VD IN SW VD1
9
BB H
SW DATA 0
11
SW DATA 1
63
12
ALTOFF H ALTOFF H
SW DATA 2
60
REC H REC H
44
3 PB L PB L
91
T REEL P.
NORM A CTL NORM A CTL
62
YCA MUTE YCA MUTE
78
A MUTE A MUTE
4
58
S REEL P.
SECAM DET SECAM DET
59
BLUE BACK H BB H
88 57
SECAML SECAML
T.TOP.S
47
VD OUT OSD SIG OUT
28
TU CSYNC
C SYNC
89
T.END.S
95
FSS IN FSS IN
8 FL START
+SAFETY SW
YCA CLK
YCA DATA
5
REMOCON
18
PLL CLK,S CLK
I2C CLK
17 PLL DATA,S DATA
I2C DATA
YCA CLK
YCA DATA
IC301 (1/2) MPU
SYSTEM CONTROL, OSD
TIMER, TUNING CONTROL
27
FLD CS
14
FLD CLK
IC304
16
FLD DATA OUT
15
FLD DATA IN
I2C ROM
6
IC141
7
VPS/PDC
87
TU SW1
86
TU SW2
83
AFT C
GV 29 EURO, GV 9300 EURO
IC301 (1/2)
SERVO
(MN101D01)
84
85
TRACKING
CTL
TO VA-A
REC CTL
DRIVER
74
CTL+
75 WAVEFORM
SHAPER
CTL-
TO VA-A
70 Vref
TAPE SPEED
DET
PLAY
68
CFG
REC
TO TB-1
67
F-DIVIDER
WAVEFORM
SHAPER
66
DPG IN
65
RF SW
DFG IN
DRUM
SPEED CTL
50
SYNC SEP
C SYNC
4 - 5 GRUNDIG Service
Circuits imprimés et schémas électriques / Layout of PCBs and Circuit Diagrams
Reference
Oscillograms ....4-14
CP-1 ................4-11
PW-A ...............4-23
ONLY GV9300 EURO
100
CTL-
24
V LOCK P
CTL+
99
H AMP SW
H.A.SW
ROTARY
98
ROTARY
20
MC FR
23
RF SWP
30
AF SW
AF SWP
DUMMY
V
CAP
PHASE CTL
33 L.P.F
+
D/A CONVERTER
CAP
SPEED CTL
DRUM
PHASE CTL
34
L.P.F
+
D/A CONVERTER
SY-A ................4-19 TM-A................4-18
TB-1.................4-24 VA-A ................4-21
TM-1 ................4-18
TN-A ................4-21
VD(TO MCOM)
ENV DET
QVD
TO
RF SWP
VA-A
ENV SW
H AMP SW
ROTARY
CTL HEAD
-
+
MC-FR
C-FG
CAPSTAN
MOTOR
MECHANISM
D-FG
D-PG
HEAD
DRUM
MOTOR
4 - 6