JVC TH-C90A Service Manual page 53

Front section
54 53 52 51 50
C505
NI
R505
R501
R502
R503
R534 R533
15k 6.8k
S535 S534 S533
DISC3 DISC4 DISC4
PLAY OP/CL PLAY
R539 R538
15k 6.8k
S540 S539 S538
DISC1 DISC1 DISC2
OP/CL PLAY OP/CL
S531-S540
QSW0522-002Z
TO MAIN PWB
CN457 OF 5.0V
KEY1
1
LVS10488-002A 5.0V
KEY2
2
(SHEET 2/6) 0V
BGND
3
LVA10635-A1
S526
F.SKIP
49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14
QLF0168-001
DI501
FL DISPLAY
K504 0
K502 0
K501 0
ILLUMI1 -21.3V
G10
ILLUMI2 -21.3V
G11
-21.3V
NC S17
-23.5V
NC
VEE
82K -23.2V
OSC
S16
FL DRIVER
-13.0V
NC
S15
1k -18.9V
DI-DT IC501
S14
1k 2.6V -18.9V
DI-CK PT6315
S13
2.6V -23.1V
1k DI-CS
S12
0V -14.5V
K1
S11
0V -10.3V
K2 S10
R532 R531
3.9k 3.3k
S532 S531
DISC5 DISC5
OP/CL PLAY
R537 R536
KEY4
3.9k 3.3k
S537 S536
DISC2 DISC3
PLAY OP/CL
LVA10635-A2
R521 R522
TOP KEY PWB
3.3k 3.9k
S522 S523
SOURCE STOP
R526 R527 R528
3.3k 3.9k 6.8k
S527 S528 S529
B.SKIP PAUSE PLAY
S522-S529
QSW1120-001Z
13 12 11 10 9 8 7 6 5 4 3 2 1
C518
0.001/50
VOLUME
JS541
QSW1059-001
4 1 3 2 5
G7
G6
S17
S16
S15
S14
REMOCON
S13
S12
IC511
GP1UM261XKVF
S11
S10
1 2 3 4 5
R506
33
ILLUMINATION LED
C519
NI
NOTES
1. VOLTAGES ARE DC-MEASURED WITH A DIGITAL VOLT METER WITHOUT INPUT SIGNAL.
CONDITION --- A CD disc in the Tray 1 , and PLAY mode .
2. UNLESS OTHERWISE SPECIFIED.
ALL RESISTORS ARE 1/16W 5% METAL GLAZE RESISTOR. OR 0.5% METAL GLAZE RESISTOR.
ALL CAPACITORS ARE 50V , 25V , 16V , 10V or 6.3V CERAMIC CAPACITOR .
ALL RESISTANCE VALUES ARE IN OHM( ).
ALL CAPACITANCE VALUES ARE IN F(p=pF).
ALL E.CAPACITORS ARE SHOWN IN THE FORM OF CAPACITANCE( F) /RATED VOLTAGE (V).
ALL INDUCTANCE VALUES ARE IN H(m=mH).
3. NI STANDS FOR NOT INSERTED PARTS.
LVA10636-A2
FRONT PWB
K503
0
REMOCON
KEY1
KEY3
KEY4
DI-CS
DI-CK
DI-DT
VOL1
VOL2
C6205
0.01
STANDBY LED
POWER SW
C6105
0.01
K6001-K6004
NQR0007-002X
R6001
1k
W5001 NI
1
CN501
QGF1036F2-17
-21.3V
1
F-
-17.4V
2
F+
-23.5V
3
-VDISP
0V
4
FLGND
5.0V
5
D5V
0V
6
DGND
5.0V
7
STANDBY
5.0V TO MAIN PWB
8 B5V
0V CN450 OF
9
BGND
5.0V LVS10488-002A
10
REMOCON
5.0V (SHEET 2/6)
11
KEY1
5.0V LVA10635-A1
12 KEY3
5.0V
13
KEY4
14
DI-CS
15
DI-CK
16
DI-DT
17
NC
CN502
QGF1205F2-07
5.0V
VOL1
1
5.0V TO MAIN PWB
VOL2
2
0V CN451 OF
BGND
3
0.5V LVS10488-002A
HP-DET
4
0V (SHEET 2/6)
HP-R
5
0V LVA10635-A1
6 AGND
0V
HP-L
7
HEADPHONE OUT
J6001
QNS0231-001
0V 2
3
0V
1
0V
4
0V
0V 5
0V 6
7
0V
W6001
QUB220-12HPXL-E
1
2-7