Schematic Diagram - Main Section (1/2) - Sony ICF-CD855V Service Manual

ICF-CD855V
6-11. SCHEMATIC DIAGRAM – MAIN Section (1/2) – •
ALARM A
BUZZER RADIO CD
R601 C611 R603 C612 R605 C613
1k 1 1k 1 1k 1
D601 D602 D603
TOL-31CSGAKAA TOL-31CSGAKAA TOL-31CSGAKAA
-KSO1 -KSO1 -KSO1
Q601 Q602 Q603
DTC144EUA DTC144EUA DTC144EUA
R607 220k R609 220k R611 47k R613 47k R615
R608 470k R610 100k R612 470k R614 47k R616
S601 S602 S603 S604 S605
PRESET TUNING
5 4 3 2 1
SELECT / PRESET
R648 100k
R649 22k
R646 100k
S616
R647 220k
MODE
S615
R652
SNOOZE
SLEEP OFF R653
W605
1 2
W605 1 2
R619 220k R621 220k R623 470k R625 47k
R620 470k R622 100k R624 47k R626 47k
S609
S610
CD SLEEP
TUNE RADIO ON
TIME SET BAND
R632 470k
+
R633 47k
S613
TUNE
TIME SET
- OFF
ALARM B
BUZZER RADIO CD
C601 R636 C602 R638 C603 R640
1 1k 1 1k 1 1k
D604 D605
TOL-31CSGAKAA TOL-31CSGAKAA TOL-31CSGAKAA
-KSO1 -KSO1
Q604 Q605
DTC144EUA DTC144EUA DTC144EUA
Q604-606
LED DRIVE
S619
(CD LID OPEN/CLOSE DETECT)
See page 28 for Waveforms. • See page 32 for IC Pin Function Description.
Q601-603
LED DRIVE
W601
6P
100k R617 22k
22k R618 47k
S606
ALARM A
(1/2)
CNP601
6P
ABU
ARA
ACD
KEY0
R497
100
S403
CLOCK
R650 47k
W603 W603
R651 22k 4 4
A1
R667
S617
100
KEY1
VOL -
KEY2
22k 1 1
R654
100
47k
S618
VOL +
R627 100k R629 22k
R628 22k R630 47k
S611 S612
NAP ALARM B R631
100
W602
CNP602
R634 47k 7 7P
R635 47k A1
KEY3
S614
BBU
BRA
ALARM RESET
BCD
1
C604
1
D606
-KSO1
Q606
W604 W604
2 2 OPEN
1 1
LCD601
LIQUID CRYSTAL DISPLAY
CNP606
18P
CNP301
18P
C403 1 C402
SEG10
SEG11
SEG11
SEG12
SEG12
SEG13
SEG13
SEG14
SEG14
SEG15
SEG15
SEG16
SEG16
SEG17
SEG17
SEG18
SEG18
SEG19
SEG19
SEG20
SEG20
SEG21 SYSTEM CONTROLLER
SEG21
IC401
SEG22
µPD789477GC
SEG22
-A39-8BT
SEG23
SEG23
SEG24 VOL CLK
SEG24
SEG25 ALARM A CD
SEG25
SEG26 ALARM A RADIO
SEG26
SEG27 ALARM A BUZ
SEG27
L401 100µH
AVDD
FSEQ
OPEN
CD
OPEN
R444
10k
DRF
C413
0.01
KEY0
KEY3
KEY1
KEY2
R447
0
R449
0
R463 C416 R467
1M 1000p 1k
OPEN R445 220k
26 26
Q609-612
LED DRIVE
Q609 Q610 Q611
DTA114EUA DTA124EUA DTA114EUA
CNP607
18P
CNP302
18P
1
C455
470p
S401
C401 R401
1 100k BRIGHTNESS
R407
C454
4.7k LOW MID HI
0.01
R403
100k
R410 R408
10k 22k
C458 C442
0.01 0.01
NC
R494 1k C445 0.01
CD ON
R493 1k
RADIO ON
R492 1k C444 0.01
AMUTE
R491 10k C443 0.01
RESET
R490 0 X402
X2
4.19MHz
X1
C438
2.2
VSS0
BP401
VDD0
R488 220k
XT2 C437 22p
X401 32.768KHz
XT1 C436 22p
IC
R486 10k BCD C435 2200p
ALARM B CD
R485 10k BRA C434 2200p
ALARM B RADIO
R484 10k BBU C433 2200p
ALARM B BUZ
R483 1k C432 1000p
VOL DAT
R482 1k C431 1000p
R481 10k ACD C430 2200p
R480 10k ARA C429 2200p
R479 10k ABU C428 2200p
Q401
MUN5113T1
Q401,402
C420 AC CHECK
100p
R502
10k
C457
1000p
Q402
MSD1819A
-RT1
R478 C427
1k 0.01
R465
22k
Q612
DTA124EUA
2
R666 D610
100 SLP-WH118A-51
1
(LCD BACK LIGHT)
W607
2
R660 D609
100 SLP-WH118A-51
1
JC605
(LCD BACK LIGHT)
0
W606
A1
A2
A3
A4
A5
BP403
L402
220µH
BP402
A6
A7
A8
(Page 27)
R503
100k
A9
A10
R464
A11
47k
A12
A13
A14