Sony HCD-N555AVK / LBT-N555AVK Service Manual ▷ View online
— 17 —
MAIN board
Note:
pA is including in MD board.
SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
CD LED board
HP board
PANEL board
CD (L) board
TRANS board
S. WOOFER board
TCB board
KEY CON board
POWER AMP board
CD (R) board
CD JOG board
DOOR SW board
TC CONTROL board
TC SW board
MIC board
LEAF SWITCH board
MD board (including
p
A)
p
A MOTOR board
BD board
LED board
TABLE SENSOR board
CD MOTOR board
— 18 —
5-2. IC PIN FUNCTIONS
• IC501 GRAPHIC CONTROL (ASD0204)
Function
I/O
Pin Name
Pin No.
V
DD
LED8
LDE7, 6
LED5–1
RESET
X2
X1
IC (Vpp)
XT2
JOG B
V
DD
LED10, 9
KEY SEL
VOL B
REQ. GM
CLK MG
DATA GM
DATA MG
AV
SS
SPEANA 4–1
KEY 4–1
AV
DD
AV
REF
VOL A
JOG A
RDY MG
SIRCS
V
SS
DOR SW
LED SELECT
LED13–11
V
DD
LEDS7, 6
LEDS5, 4
LEDS3–1
SEG32–8
V, LOAD
SEG7–1
GR14–1
–
O
O
O
I
O
I
–
I
I
–
O
O
I
O
I
O
I
–
I
I
–
–
I
I
I
I
–
I
O
O
–
O
O
O
O
–
O
O
+5V
LED drive signal output.
LED drive signal output.
LED drive signal output.
Reset signal input.
X’ tal (4 MHz).
GND
Not used.
AMS encoder signal input.
+5V
LED drive signal output.
Key select control.
Volume encoder signal input.
Request signal from/to master control.
Serial clock input.
Serial data output.
Serial data input.
GND
Spectram analizer signal input.
Key matrix input.
+5V
Volume encoder signal input.
AMS encoder signal input.
Ready signal from master control.
SIRCS signal input.
GND
CD door open detection input.
LED select signal output.
LED drive signal output.
+5V
Not used.
LED drive signal output.
LED drive signal output.
FL segment signal output.
–25V for FL
FL segment signal output.
FL grid signal output.
• Abbreviation
FL: Fluorescent Indicator Tube
GND: Ground
GND: Ground
1
2
3, 4
5-9
10
11
12
13
14
15
16
17, 18
19
20
21
22
23
24
25
26-29
30-33
34
35
36
37
38
39
40
41
42
43-45
46
47, 48
49, 50
51-53
54-78
79
80-86
87-100
— 19 —
V
SS
XOUT
XIN
RESET
XOUT
XIN
GND (test)
AC CUT
SUPER WOOFER ON
ST-MUTE ON
180-A-PLAY
180-B-PLAY
180-B-REC
V. DET
BD-UP (5CD)
TRAY CLOSE (1CD)
ENCODER-1
ENCODER-2
ENCODER-3
OUT SW OPEN
LOAD IN
LOAD OUT
TBL-L
TBL-R
SCOR
TBL-SENS
RDS INT
RDS DATA
DF LAT
SENS
XRST
MG-RDY
ADJ
GM-REQ
MG-CLK
GM-DATA
MG-DATA
CD-CLK
ADJ-2
CD-DATA
• IC701 MASTER CONTROL (TMP87CS64YF)
Function
I/O
Pin Name
Pin No.
–
O
I
I
O
I
–
I
O
O
I
I
I
I
I
I
I
I
I
I
O
O
O
O
I
I
I
I
O
I
O
O
I
I
O
I
O
O
I
O
GND
X’ tal (10 MHz)
Reset signal input.
X’ tal for clock (32.768 kHz)
GND
Back up signal input.
Super woofer ON/OFF control.
Mute signal output for tuner.
Tape detection sigal input. (Connected to GND)
Voltage detection (Not used).
Disc table up detect.
Connected to GND
Input selector control signal output. (Pull up)
Out switch signal input. (Pull up)
Loading motor control signal output. (Not used)
Table motor control signal output.
Sub-code sync signal input.
CD Table sensor signal input.
RDS data start input. (Not used)
RDS data output. (Not used)
Latch signal for digital filter.
Table sence signal input.
Reset signal output for CD.
Ready signal to graphic control.
Test mode input.
Request signal from graphic control.
Clock signal to graphic control.
Data input from graphic control.
Data output to graphic control.
Clock output. Serial bus line.
Test mode input.
Data output. Serial bus line.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
• Abbreviation
FL : Fluorescent Indicator Tube
GND : Ground
FL : Fluorescent Indicator Tube
GND : Ground
— 20 —
Function
I/O
Pin Name
Pin No.
AUB IN
AUB OUT
FOCUS SW
SQ-CLK
SQ-DATA
X-LAT
TEST
VAREF
AV
SS
V
SS
V
DD
SPEC
DESTINATION
DISC SENS
TC RELAY
A-SHUT
B-SHUT
B-HALF
A-HALF
220-A-PLAY
220-B-PLAY
62427 LAT
K-CON-LAT
VOL LAT (AV)
FRONT SP RELAY B
REAR SP RELAY C
POWER ON
CD POWER
RPOLOG LAT
MUTE
COM CLK
COM DIN
COM DATA
K CON ON
LIDDED LED
MD/VIDEO
DBFB-HIGH
PWM-OUT
PRO-LOGIC
TC A
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
I
O
O
O
I
O
I
I
–
–
–
I
I
I
O
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
O
I
O
O
Audio bus in/output. (Not used)
Focus switching signal output.
Subcode Q data read clock output.
Subcode Q data input.
Latch signal digital signal processor.
Test land.
Analog reference voltage input.
GND
+5V
Destination detection input.
Not used.
REC/PB select signal output.
Control signal input form deck.
PLL latch output.
Latch signal for KEY CONTROL.
Latch signal for electrical volume. (Not used)
Not used.
Rear speaker relay control output.
Power on signal output
CD power control signal output.
Not used.
Mute signal for AMP.
PLL clock output. (PLL, Function, Graphic Equalizer)
PLL data input. (PLL, Function, Graphic Equalizer)
PLL data output. (PLL, Function, Graphic Equalizer)
Control signal output for KEY CONTROL.
Disc No. LED drive signal output.
MD/VIDEO select output.
DBFB switching signal output.
Not used.
Dolby pro-logic control ourput.
Deck A, B select output.
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