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7-57-5
3553 A3
3554 A4
3555 C2
3556 C4
3557 C2
3558 C3
6450 B2
6451 B4
7450 C3
7451 C4
F470 B1
F471 B1
F472 A1
F473 A1
F474 A1
F475 A1
KEY BOARD
STANDBY
SPEED
(key lighting)
to / from Display Board
1416
1234
1234
A
B
C
A
B
C
1450 A3
0060 A1
1451 A2
1452 A3
1453 A4
1454 A4
3550 A2
3551 A2
3552 A3
390R
3555
3557
10K
D
KEY
3556
82R
1453
PLAY/PAUSE
CD
10K
3558
3554
10K
3552
1K8
3553
3K9
3551
1K2
3550
820R
1450
O/C_CD
F473
SPEED
STANDBY-ON
1451
1454
STOP CD
1452
1
2
3
4
5
6
F470
0060
FE-ST-VK-N
F472
F471
F475
D
F474
D
6450
6451
BC847B
7451
+5V +5V
LED_ON/OFF
LED_SPEED
KEY_0
+5V
7450
BC847B
LST770-KL
LBT776-K1L1
Key Board CDR79x, 260302
red blue
EVM
. . . V
V
DC VOLTAGES MEASURED IN
STOP MODE
UNLESS STATED OTHERWISE
... /...V on/off
5 –0,25V
5 –0,25V
4,7V/0V
4,9V/0V
0,7V/0V on=0,1V
0,7V/0V on=0,1V
3103 303 3483.2
KEY Board / copperside view
Key Board stage .2 CDR79x, 030402
0060 A1
1450 B1
1451 A1
1452 A3
1453 A3
1454 A4
3550 A2
3551 B2
3552 B2
3553 A3
3554 A3
3555 A2
3556 B3
3557 A1
3558 B2
6450 B2
6451 B3
7450 A2
7451 A3
9451 A2
9452 B3
F482 D2F480 C2
F481 C2
1414
blue
3x LBT776-K1L1
123456
123
A
B
C
D
A
B
C
D
1460 C2
3570 C5
3571 C5
from Display Board
red
4x LST770-KL
LIGHTGUIDE BOARD
(Rec. Indicator)
3572 C6
3573 B3
3574 B3
3575 B4
3576 B4
6462 B3
6463 C5
6464 B3
6465 C5
6466 B4
6468 C6
6469 B4
F481
456
F480
F482
390R
3575
3576
390R
3574
390R
120R
3572
390R
3573
3570
270R
270R
3571
6469
6465
6468
6464
6466
6463
6462
3
4
FMN
1460
2
1
+5V
+5V
LED_red
+5V
LED_blue
Lightguide Board CDR79x, 270302
EVM
. . . V
V
DC VOLTAGES MEASURED IN
STOP MODE
UNLESS STATED OTHERWISE
5 –0,25V
on=1,6V
on=0,4V
Lightguide Board/ copperside view
LED red
LED blue
GND
+5V
1460
RedRedRedRed Blue Blue Blue
Lightguide Board stage .2 CDR79x, 270302
1460 A1
3570 D1
3571 D1
3572 E1
3573 E1
3574 C1
3575 D1
3576 E1
4461 A1
4463 A1
6462 E1
6463 D1
6464 C1
6465 D1
6466 D1
6468 E1
6469 E1
4461
4463
3574
3571
3575
3573 3572 3576
3570