Panasonic PV-DF2700-K Service Manual page 388

TUNER MAIN C.B.A.
UHF/VHF TUNER/TV DEMODULATOR UNIT 1
AUDIO
22
RF
RF OUT
UHF/VHF TUNER/TV DEMODULATOR UNIT 2
RF IN
AUDIO
22
AUDIO C.B.A.
TUNER 1 AUDIO
TO TV STEREO SIGNAL
PATH BLOCK DIAGRAM
TUNER 2 AUDIO
NORMAL AUDIO
TO/FROM Hi-Fi AUDIO SIGNAL
PATH BLOCK DIAGRAM
NORMAL AUDIO
5
MAIN C.B.A.
P7101 P4007
7 7
P7101 P4007
5 5
P4205
PIN
31 31
P4206 PIN
45 45
V1 40 mVp-p
IC3001 (AUDIO PROCESS)
AGC
DET
20 mV 0.5 ms
P4203 PIN
REC
73
24 24 PB
AGC
P4203 PIN
MUTE
22 22
57
LINE
AMP
69
V1 0.26 Vp-p
0.2 V 0.5 ms
FL4051
15.75kHz
TRAP
REC AUDIO SIGNAL
+5V
Q4001
Q4002
56
REC-OFF
Q4003
REC-ON
REC
65
AMP
PB
58 60
AMP
V1 48 mVp-p V1 0.7 Vp-p
2
I C
CONTROL
AUDIO
20 mV 0.5 ms MUTE(H) 0.5 V 0.5 ms
75 7 8
(TO/FROM IC6001(17))
I C SERIAL DATA 2
Q4173
(FROM IC6001(18))
I C SERIAL CLOCK 2
(FROM IC6001(62))
AUDIO MUTE(H)
(FROM IC6001(59))
BEEPER ON(H)
Q4171
(FROM IC6001(19))
BEEPER
PB AUDIO SIGNAL
AUDIO CONTROL
HEAD AMP C.B.A. HEAD UNIT
P6202 P2601 P4091 P4092
3 3 2 2
P6202 P2601 P4091 P4092
1 1 1 1
P3001 P3501 P4091 P4092
BIAS OSC
3 3 4 4
T4101,
Q 4101
P3001 P3501 P4091 P4092
4 4 3 3
FULL ERASE HEAD UNIT
P4001 PIN
1 1
FULL
P4001 PIN
ERASE HEAD
2 2
AUDIO
HEAD
AUDIO
ERASE
HEAD