Sony SA-VA100 Service Manual ▷ View online
— 37 —
[MAIN BOARD] — Conductor Side —
CT601
OSD width
OSD width
IC605
IC608
IC607
CT602
OSD Color
OSD Color
RV601
Color burst
Color burst
— 38 —
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
L-CH SPEAKER SYSTEM
MAIN board(CDM)
STORE board
DCNT
board
board
CTR SENSOR
board
board
DDET board
OP/CL board
HPOS SW board
MOTOR (6P)
board
board
POS SW
board
board
OVER SW board
VIDEO board
CD board
TRANS board
ENCAPSULATED
COMPONENT
COMPONENT
TC board
AUDIO board
LEAF SW board
PO-C board (
r
A)
PO-L board (
r
B)
PO-R board (
r
C)
PO-RE board (
r
D)
PO-W board (
r
E)
REG board
SURR 2 board (
p
H)
SURR 1 board (
p
J)
T2 board
LED board
HP board
T1 board
CD MECHANISM
KEY 2 board
PS board (
p
G)
CN board (
r
F)
MAIN board
(including
(including
4
k)
R-CH SPEAKER SYSTEM
JW board (
W
L)
KEY 1 board (
W
M)
IC board (
4
k)
Note: POWER board (including
rA-rF)
SURR board (including
pG-pJ)
FL board
(including
(including
W
L-
W
M)
— 93 —
I/O
Function
• IC106 CD System Controller (µPD78058GC-225-3B9)
Pin No.
6-14. IC PIN FUNCTION
Pin Name
O
O
O
—
O
O
I
—
O
O
I
O
O
O
O
I
O
O
O
O
—
—
I/O
I
O
I
I
I
I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 to 31
32
33
34, 35
36 to 39
40 to 42
43
44
45
46
47
Reset signal output to BD block
Muting ON/OFF output “L”: ON
Focus gain switching output
Ground (A/D)
Stocker motor control output
Loading motor control output
A/D reference voltage input (+5V)
Ground
Not used
Sub-Q data input from DSP
Not used
Sub-Q data reading clock output
Serial data latch pulse output to D/F
Serial data latch pulse output to DSP and SSP
Status input from DSP and SSP
Serial data output to DSP, SSP and D/F
Serial clock output to DSP, SSP and D/F
Address output to SRAM
Write enable output to SRAM “L”: write, “H”: read
Ground
Y. bus data input/output
Position detect input of optical pick-up block
Not used
Stocker absolute address detection input
Tray close detection input “L”: close
Carried stock-in detection input “L” stock-in
Tray open detection input “L”: open
BDRST
AMUTE
FCSSW
AVSS
STKSPD
TRYSPD
+5V
GND
DPDAT
DPCLK
SUBQ
—
SQCLK
PRGL
XLT
SENSE
DATA
CLK
A0 to A12
WE
VSS
GND
BUSD0 to BUSD3
POS1 to POS3
AFADJ
HPOS
TCLOSE
STORE
EJECT
• Abbreviation
DSP : Digital Signal Processor
SSP : Servo Signal Processor
D/F : Digital Filter
SSP : Servo Signal Processor
D/F : Digital Filter
— 94 —
I/O
Function
Pin No.
Pin Name
Stocker motor drive output (Normaly brake)
Loading motor drive output (Normaly brake)
Data input/output from SRAM
Reset input “L”: reset
Y. bus clock input
Y. bus clock output
Y. bus busy signal input/output
Sub code sync S0, S1 detection input
Tray center position detection input
Stocker relativ address detection input
Slit sensor input of disc tray “L”: disc load
+5V power supply
Clock (5MHz)
Ground
Not used
Test pin “L”: test mode
+5V power supply (A/D)
A/D reference voltage input (+5V)
Not used (Fixed at “H”)
BD block power ON/OFF output
H
L
L
48 pin
48 pin
A
H
L
L
O
O
O
O
I/O
I
I
O
I/O
I
I
I
I
—
O
I
—
—
I
—
I
I
I
O
B
C
D
A : open, B : down
C : up, D : brake
H
L
L
50 pin
51 pin
A
H
L
L
B
C
D
A : open, B : out
C : in, D : brake
48
49
50
51
52 to 59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76 to 78
79
80
STDWN
STUP
TFRONT
TREAR
D0 to D7
RESET
BUSCLK
BUSCLK
BUS BUSY
SCOR
CTR
DCT
DDET
VDD
X2
X1
GND
XT2
ADJ
AVDD
AVREF
KEY0 to KEY2
DPCS
BDPWR
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