Headphone Circuit, Volume Circuit And Power Circuit - Panasonic SA-XR57E Service Manual

SA-XR57E / SA-XR57EB / SA-XR57EG

13.8. HEADPHONE CIRCUIT, VOLUME CIRCUIT and POWER CIRCUIT

SCHEMATIC DIAGRAM - 18
POWER CIRCUIT
JK308 C391
1
2
Pr
R394
75
1 C392
1
4
TV/STB
Pb
IN
R395
75
3 C393
1
6
Y
R396
75
5
JK307 C388
1
2
Pr
R391
75
1 C389
1
4
DVD REC
Pb
IN
R392
75
3 C390
1
6
Y
R393
75
5
JK305
2
Pr
R385 K391
75 0
1
TV MON 4
Pb
OUT
R386
K392
75
3 0
6
Y
R387
K393
75 0
5
1
SA-XR57E/EB/EG HEADPHONE / VOLUME / POWER CIRCUIT
/
3
: -B SIGNAL LINE : +B SIGNAL LINE : MAIN SIGNAL LINE
C395 R390
0.1
C394 C396
0.1 0.1
24 23 22 21 20 19 18 17 16 15
IC304
C1AB00002029
SW AMP IC
1 2 3 4 5 6 7 8 9 10
R388
VC
1K
C398
6.3V100
14 13
R438 R439 R440
22 22 22
C464
R443 0.01
1800
11 12
+5V
C465
1K 6.3V100
C399
D406, D407
6.3V100
MAZ80560ML
C466
R444 6.3V100
1800
C467
VB R441 R442 0.01
22 22
VA
HEADPHONE CIRCUIT
C999
ZJ999
1000P
JWB901
JK905
L999
HPOUT_L TO
1 3
PANEL CIRCUIT
L997
3 2 (JWA901) ON
L998
HEADPHONE
HPOUT_R
2 1 SCHEMATIC
DIAGRAM-16
L997 - L999
J0JBC0000014
88
BK+3.3V
BK+5V
Q405
2SD0592AWA
DC DET SWITCH
R604
C468 Q506
10K
6.3V100
2SC3311ARA
DC DET SWITCH
C470 R605
D406
0.01 10K
C471
D407
0.01
C469
6.3V100
Q406
2SB0621AHA
DC DET SWITCH
VOLUME CIRCUIT
3
C989
100P
VR901
2
EVEKD2F3024B
C987
VOLUME JOG
100P
1
R981
1200
S981
1
ENTER
C986
100P
VR902
2
K9AA012A0007
C985
INPUT SELECTOR
100P
3
BK+3.3V
1
TO
BK+3.3V
2
HDMI CIRCUIT
BK+5V
(CNA781) ON
3
GND SCHEMATIC
4
DIAGRAM-24
GND
5
JW781
ENC1
6
TO
ENC2
5 PANEL CIRCUIT
KEY2
4 (JWA902) ON
SEL_ENCA
SCHEMATIC
3
DGND DIAGRAM-16
2
SEL_ENCB
1
JWB902
ZJ992