Read Sony XR-C750 Service Manual online
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• IC501 µPD78058GC-463-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
RC IN0
I
Rotary commander A/D conversion input 0
2
ILL.IN
I
Illumination line detection input
3
NIL
I
Connect to GND.
4
AVSS
—
GND for A/D conversion.
5
LCDANG
O
Output for LCD view angle adjustment.
6
NIL
I
Connect to GND.
7
AVREF
—
Reference voltage for D/A conversion.
8
RE IN0
I
Rotary encoder input 0
9
RE IN1
I
Rotary encoder input 1
10
SUB-CONT1
O
SUB.W OUT control output
11
SUB-CONT2
O
SUB.W OUT control output
12
LCDSO
O
LCD serial data output
13
LCDCKO
O
LCD serial clock output
14
LCDCE
O
LCD serial chip enable output
15
LCDINH
O
LCD blank display control output
16
UNISI
I
Serial data input
17
UNISO
O
Serial data output
18
UNICKI
I
Serial clock input
19
UNICKO
O
Serial clock output
20
BUSON
O
BUS ON control output
21
SYSRST
O
System reset control output
22
AMPON
O
Power amplifier power control output
23
—
—
Not used.
24
NCO
—
Not used.
25
PW ON
O
System power control output
26
ILLON
O
Illumination power control output
27
COLOR
I/O
Illumination color select control input/output
28
AMSON
O
TAPE AMS control output
29
REL
I
Rotation detection input of reel table.
30
MTLIN
I
Auto METAL detection input
31, 32
POS3, 2
I
Position signal detection input
33
GND
—
GND of microcomputer.
34, 35
POS0, 1
I
Position signal detection input
36
LM LOD
O
Loading motor control output (Loading direction)
37
LM EJ
O
Loading motor control output (Eject direction)
38
N R OUT
O
Forward/Reverse detection output
39
MTLON
O
METAL control output
40
CM ON
O
Capstan motor control output
41
TAPON
O
TAPE power control output
42
PW SEL
I
Power select initial setting
43
RC IN1
I
Rotary commander input 1
44
TEST
I
TEST mode setting input
45
EQSEL
I
Equalizer select input
46
BEEP
O
Buzzer control output
47
MUTE
O
System mute control output
48
VOLCE
O
Electric volume serial chip enable output
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