Panasonic PV-20DF25-K, Service Manual

Page: 58 / 87

PV-20DF25/PV-20DF25-K/PV-27DF25/PV-27DF25-K/PV-27DF5
SYSTEM CONTROL BLOCK DIAGRAM
SYSTEM CONTROL BLOCK DIAGRAM
X6001
(14.3MHz)
OSC
OSC 2
OSC 1
IR DATA
KEY DATA 0
KEY DATA 1
KEY DATA 2
+5V
CH DOWN
CH UP
POWER
SKIP +
SKIP -
DVD READY(L)
TO/FROM DVD I
BLOCK DIAGRAM
HOST READY(L)
DVD RESET(L)
VOLUME
DOWN
VOLUME
UP
----- ----- -----
-----
TERMINAL
VOLTAGE
OPERATION
BUTTON
KEY MATRIX (SW6301 - 6304,6307 - 6309,6316 - 6318)
5
6
I 2 C SERIAL DATA
I 2 C SERIAL CLOCK
(TO/FROM IC5301(44))
I
2 C SERIAL DATA
(TO IC5301(43))
I
2
C SERIAL CLOCK
I 2 C SERIAL DATA
I 2 C SERIAL CLOCK
IC6004
(MEMORY)
24
27
I 2 C SERIAL DATA
I 2 C SERIAL CLOCK
IC9001
(FM SIGNAL PROCESS)
UHF/VHF TUNER TV DEMODULATOR UNIT
ON-TIMER LED ON(L)
D6304 ON-TIMER
I 2 C SERIAL DATA
I
2
C SERIAL CLOCK
+5V
IC6001 (SYSTEM CONTROL MICROCONTROLLER)
38
39
1
2
3
72
71
17
14
MAIN C.B.A.
OPERATION C.B.A.
DVD READY(L)
36
SERIAL DATA 1
66
SERIAL CLOCK 67
HOST READY(L) 27
DVD RESET(L)
68
SERIAL DATA 0 65
11
10
(TO IC4601(15))
I
2
C SERIAL DATA
(TO IC4601(14))
I
2 C SERIAL CLOCK
P4801
16
P4801
10
SERIAL DATA 0
P4801
13
P4801
12
SERIAL DATA 1
P4801
14
SERIAL CLOCK
P4801
15
IR
RECEIVER
U6301
0V 0.3V 0.4V 1.1V 1.2V 1.95V 2.05V 2.85V
OPEN
/CLOSE
2.95V 3.7V
DVD
PLAY DVD
STOP
-----
3.8V 4.5V
-----
----- -----
-----
-----
-----
4.6V 5.0V
Q6003
IC6005
UNSW+5V
D6002
D6009
RESET
VDD
POWER DOWN(L)
34
78
37
1 5
UNSW+5V
RESET
RESET
Q6006
Q6005
P6302
7
P6302
4
P6301
7
P6301
4
PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25- K
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