Diagram & Description - Sanyo DC-D9 Service Manual

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IC BLOCK DIAGRAM & DESCRIPTION
IC251 TMP87CM21F-2066 ( MICROPROCESSOR)
No. NAME 1/0 DESCRIPTION
1
INo.I NAME 11/0[
DESCRIPTION
1
Vss
GROUND
2 XOUT o CLOCK,4.19MHZ
3 XIN
I CLOCK.4.19MHZ
39 VREF REFERENCE VOLTAGE
40 VDD POWER(+)
41 MUTE1
o
AMP. I FUNCTION, MUTE SIGNAL (L= OFF, H =ON)
4
RESET
SYSTEM RESET
5 PLAY-SW I CD PLAY SWITCH
6 SENS
I CD SENS
142! MUTE2 I O t AMP. /POWER MUTE SIGNAL (L= OFF. H= ON) !
43 I TU-MUTE \ O I TUNER MUTE SIGNAL (L= OFF, H =ON)
44 I TAPE I O I TAPE FUNCTION
7
V-CHK VOLTAGE CHECK, FAILURE
8 TEST TEST
9 IR I REMOTE CONTROL
45 B EAT o
TAPE, BEAT CANCEL (L= POSITION 1,
H = POSITION 2)
46 DECK-REC I TAPE RECORD CONDITION
47
VF-KB
o VOCAL FADER
10 P-CON o POWER CONTROL (L= OFF, H =ON)
11 T-MOTOR o
CD OPEN /CLOSE MOTOR (L = CLOSE, M =
STOP,
H= OPEN)
12 L-MOTOR o
CD LOADING MOTOR (L = UNLOAD,
M = STOP,
H = LOAD)
CD UP/ DOWN MOTOR (L = DOWN, M = STOP,
,13 H-MOTOR o H = up)
'14 CD-SCLK o IC104 SOCK SIGNAL
48 VF-KC o
VOCAL FADER (H= V-FADER, L= MPX,
H = NORMAL)
49 NC
50 NC
51 NC
52 SEL-SLEEP I SLEEP TIMER SELECT
53 SEL-VF
1 VOCAL FADER SELECT
15 CD-SIN
I IC104 SQSO SIGNAL
16 XTAL
o IC104 XLAT SIGNAL
17 SCOR I IC104 SCOR SIGNAL
1541 SEGIB ] O ! LCD SEGMENT 18 I
1561 sEG16 I o ILCD SEGMENT 16
I
18 H-PS I CD PHOTO SENSOR (UP/DOWN)
CD DSP RESET/ POWER CONTROL SIGNAL
19
XRES
(H= POWER OFF, DSP = RESET)
(M= POWER ON, DSP = RESET)
(L= POWER ON, DSP=ON)
20 CD-DATA o IC104 DATA SIGNAL
57 SEG15 o LCD SEGMENT 15
58 SEG14 o LCD SEGMENT 14
59 SEG12 o LCD SEGMENT 12
60
SEG11 o
LCD SEGMENT
11
61 SEG1O o LCD SEGMENT 10
62 SEG9 o LCD SEGMENT 9
21 CD-CLK o IC104 CLOCK SIGNAL
22 TIJN.cE o TUNER IC245 CE SIGNAL .
FUNCTION A(L=TUNER, L= TAPE, H =CD,
23 'uNC-A 0 H= LINE)
24 FUNC-B o FUNCTION B (L= TUNER, L= CD, L= LINE, H =TAPE)
25 SDATA o SIREAL DATA SIGNAL
63 SEG13 o LCD SEGMENT 13
64 SEG8 o LCD SEGMENT 8
65 SEG7 o LCD SEGMENT 7
66
SEG6 o LCD SEGMENT 6
67 SEG5 o LCD SEGMENT 5
68 SEG4 o LCD SEGMENT 4
261
SCLK I O I SIREAL CLOCK SIGNAL
271 VOL-ST I O I VOLUME, IC402 CONTROL SIGNAL
69 SEG3 o LCD SEGMENT 3
70 SEG2 o LCD SEGMENT 2
71
SEG1 o LCD SEGMENT
1
1281 SELOUTO t O I TUNER SELECTION
29\ SELOUT1 I O I FUNCTION SELECTION
30 I KEYO I i KEY INPUT
72 SEGO o LCD SEGMENT O
73
COM3 o LCD COMMON 3
74 COM2 o LCD COMMON 2
131 I KEY1 I I I KEY INPUT
321 SD/ST
I I I
TUNER SD, STEREO/SELECTION
33 I CD-SWO
I I CD LIMIT SWITCH, FOK
75 COM1 o LCD COMMON
1
76 COMO "o LCD COMMON O
77 VLC o LCD DRIVE POWER
134 ! CD-SWI / I t CD OPEN/ CLOSE SWITCH
35 CD-SW2 I CD LOAD I UNLOAD SWITCH
36 NC
37 NC
781 NC
79 [ NC
I
1381 VASS I I A GROUND
-50-