XC-LA21
29
A
B
C
D
1
2
3
4
1
2
3
4
D404
C421
C415
C500
R463
C419
W435
Q406
Q403
Q402
Q404
Q405
R462
C406
A
C501
R435
W409
CN404
C420
C407
W434
J433
CN15
SN15
C414
C408
R448
R447
G411
W428
C416
C417
R461
W432
R444
W420
C402
W426
R425
W403
LED412
W417
C401
C404
C497
C498
C499
C403
D403
W418
W404
R414
R418
R419
R135
R420
R442
R436
R431
R415
TP401
W416
W419
C409
W423
W424
W407
W406
W405
D401
R443
W425
R426
C418
X402
X401
W427
R416
R417
R427
W410
D402
W429
R446
R445
R449
C410
C413
C412
W408
W422
R450
W415
W414
W413
W412
W411
CN402
R437
R438
R439
R440
R441
W421
R403
R402
R401
R460
R434
R432
R433
R430
R429
R428
RA403
R452
R453
R454
RA404
RA405
RA406
C405
CN401
LCD401
REM401
VR401
VR402
LED408
LED411
LED409
LED410
LED404
LED407
LED405
LED406
LED403
LED402
LED401
SW405
SW406
SW407
S409
S408
S401
S414
S415
S412
S411
S402
S413
S410
S403
S404
IC401
PMT1-01-05
+5V
+5V
DGND
DGND
-24V
+5V
-24V
DGND
AC3V8
P9V
AC3V8
+5V
+5V
+5V
CONTROL BOARD
DISPLAY BOARD
1
1
10
5
1
5
10
15
20
10
5
5
11
5
10
DIS CLT
GND
KEY 2
KEY 1
KEY 0
+9V
D3 LED
D2 LED
D1 LED
+5V
DIS CLT
GND
KEY 2
KEY 1
KEY 0
+9V
D3 LED
D2 LED
D1 LED
+5V
CLOCK
TIMER
ENTER
PLAY/PAUSE
STOP
UP
DOWN
DISC3E
DISC2E
DISC1E
DISC1
DISC2
DISC3
POWER
1 NC
1
BASS/TREBLE
PMT1-01-05
PMT1-01-04
10 6V
13 GND
3 TUNER
2 CHANNEL 0
4 CHANNEL 1
6 VOL-LATCH
8 POWER CTL
15 P9V
5 VOL-DATA
7 VOL-CLOCK
9 DTS-CLOCK
11 DTS-PERIOD
16 DTS-DATA
DTS-STEREO
RDS-CLOCK
RDS-DATA
CLOCK_PWR
CD-POWER
SYS-MUTE
CD-SW_PUN
CD-BUCK
CD-CCE
CD-BUS3
CD-BUS2
CD-BUS1
CD-BUS0
CMF
CMR
DMF
DMR
EXTRA SW
HOME SW
CN2 SW
CN1 SW
O/C SW
FWD SW
RVS SW
12 -24V
14 3.8V
17 3.8V
E
E
E
E
E
E
E
E
E
E
DISPLAY/CTL ASSY
G
CN205
A
CN207
A
Q405
Q402
Q403
Q405
Q406
IC401
G
4.6 DISPLAY/CTL ASSY
SIDE A