Sony XR-C750RDS / XR-C850RDS / XR-C850RW Service Manual ▷ View online
– 29 –
Adjustment Location : tuner unit (TU10)
–set upper view–
TU10
RV1 MW AUTO SCAN/STOP LEVEL ADJ
TAPE SPEED
ADJ
RV401
(R-CH)
RV301
(L-CH)
(L-CH)
DOLBY
LEVEL
ADJ
–set bottom view–
TP (DOLBY)
DOLBY
LEVEL
ADJ
DOLBY
LEVEL
ADJ
R-CH
L-CH
L-CH
RV2 FM AUTO SCAN/STOP LEVEL ADJ
RV3 FM NOISE FOCUS ADJ
(XR-C850RDS : GERMAN MODEL)
(XR-C850RDS : GERMAN MODEL)
RV4 FM STEREO SEPARATION ADJ
RV110 FM RDS S-METER ADJ
– 30 –
6-1. IC PIN DESCRIPTIONS
• IC101 MN1884820Y5F (TUNER SYSTEM CONTROL)
• IC101 MN1884820Y5F (TUNER SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
RD
O
Read pulse output pin of data (D0 to D3).
2
BUSY
I
BUSY output monitor input pin
3 – 6
D3 – D0
I/O
Command input/output 3 to 0.
7
VDD
—
Power supply pin
8
X1
I
Ceramic oscillator connection input pin (8 MHz)
9
X2
O
Ceramic oscillator connection output pin (8 MHz)
10
GND
—
GND
11
XI
I
Connect to GND.
12
—
—
Not used.
13
X0
—
Connect to GND.
14
RESET
I
Reset input pin
15
RDSCKI/POS3
I
Used in conjunction with RDS clock input/TAPE POS3 input.
16
BU IN
I
Back-up detection input pin
17
BUSON
I
Bus interface bus on input pin
18 – 21
POS3 – POS0
I
Position signal detection input pin
22
—
—
Connect to GND.
23
MTLIN
I
Auto metal detection input pin
24
AMSIN
I
At AMS, music with/without detection input pin
25
NIL
I
Connect to GND.
26
DOLON
I/O
DOLBY control input/output pin
27
DOLBC
I/O
DOLBY B/C select control input/output pin
28
TAPMUT
O
TAPE mute control output pin
29
MTLON
O
METAL control output pin
30
RDSSI
I
RDS data input pin
31
8MIN/4MIN
I
8 MIN./4 MIN. select input pin (Fixed at “H” (C750RDS), “L” (C850RDS).)
32
CM-ON
O
Capstan motor control output pin
33
TAP-ON
O
TAPE power control output pin
34
LMEJ
O
Loading motor control output pin (Eject direction)
35
LMLOD
O
Loading motor control output pin (Loading direction)
36
NIL
I
Connect to GND.
37
REEL
I
Rotation detection input pin of reel table.
38
PLL-DI
I
PLL data input pin
39
PLL-DO
O
PLL data output pin
40
PLL-CLK
O
PLL clock output pin
41
CE
O
PLL chip enable output pin
42
RQ
O
Bus interface request output pin
43
LINK-OFF
O
Bus interface link output pin
44
SCK
I
Bus interface serial clock-in input pin
45
SI
I
Bus interface serial data-in input pin
46
SO
I/O
Bus interface serial data-out input/output pin
47
VDD
—
Power supply pin
48
AVDD
—
Power supply pin for A/D conversion input.
49
VREF
—
Reference voltage input pin for A/D conversion input. (+ side)
50 – 53
—
I
Fixed at “L”.
54
DIST-SEL1
I
Destination select setting pin (Fixed at “H” (German model), “L” (Except German model).)
55
DIST-SEL0
I
Destination select setting pin (Fixed at “L”.)
SECTION 6
DIAGRAMS
– 31 –
Pin No.
Pin Name
I/O
Pin Description
56
S-METER(AM)
I
MW S-meter voltage detection input pin
57
S-METER(FM)
I
FM S-meter voltage detection input pin
58 – 60
—
—
GND
61
MODE2
O
TUNER-ON output pin
62
—
O
Not used.
63
RECEIVE
O
SEEK OUT output pin
64
AM-ON
O
AM-ON output pin
65
MODE1
O
FM-ON output pin
66
TUNER-MUTE
O
MUTE output pin
67
AF-SEEK
O
Not used.
68
—
—
Not used.
69
MUTE-SEL
O
Fixed at “H”.
70
ST-IN/MONO
I/O
Used in conjunction with ST indicator input/MONO output.
71
SD-IN
I
Signal detecter input pin
72
—
—
Not used.
73
N/ROUT
O
Forward/Reverse detection output pin
74
AMSON
O
TAPE AMS control output pin
75
—
—
Not used.
76
PDWN
O
Power down output pin
77
RESET
O
Reset/Power down output pin
78
CE
O
Data OK/NG setting through D0 to D3.
79
CE
O
Data OK/NG setting through D0 to D3.
80
WR
O
Write pulse output pin of data (D0 to D3).
– 32 –
• IC501 µPD78058GC-462-3B9 (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-0
I
Rotary encoder input 0
9
RE-1
I
Rotary encoder input 1
10
SUB-F0
O
SUB.W OUT control output (C850RDS)
11
SUB-F1
O
SUB.W OUT control output (C850RDS)
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
LED-ON
O
LED power control output
25
PW-ON
O
System power control output
26
ILL-ON
O
Illumination power control output
27
COLOR
I/O
Illumination color select control input/output
28
NCO
—
Not used.
29 – 32
NIL
I
Connect to GND.
33
GND
—
GND of microcomputer.
34, 35
NIL
I
Connect to GND.
36 – 39
NCO
—
Not used.
40
AD-ON
O
Power control output for A/D conversion.
41
NCO
—
Not used.
42
PW-SEL
I
Power select initial setting input
43
RC-IN1
I
Rotary commander A/D conversion input 1
44
TEST
I
TEST mode setting input
45
EQ-SEL
I
Equalizer connection with/without initial setting input
46
BEEP
O
Buzzer control output
47
MUT
O
System mute control output
48
VOLCE
O
Electric volume serial chip enable output
49
SUBCE
O
Sub volume serial chip enable output
50
VOLCKO
O
Electric volume serial clock output
51
SUBCKO
O
Sub volume serial clock output
52
VOLSO
O
Electric volume serial data output
53 – 56
NCO
—
Not used.
57
DIMMER
I/O
Dimmer control input/output
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