Sony SLV-ED8ME / SLV-ED8ML / SLV-EZ8AS / SLV-EZ8NZ / SLV-EZ9AS Service Manual ▷ View online
5-4
5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTION (MA-325 BOARD IC161)
Pin No.
Pin Name
I/O
Function
1
RF SWP
O
RF switching pulse output
2
AF REC P
O
“L” output when hi-fi audio REC pause
3
N.C
–
Not used
4
QVD
O
Quasi VD pulse output
5
N.C
–
Not used
6
N.C
–
Not used
7
REC CTL
O
REC CTL signal output
8
CTL RESET
I
CTL reset (for check)
9
CAM
O
CAM motor control
10
N.C
–
Not used
11
N.C
–
Not used
12
N.C
–
Not used
13
NT JUDGE
I
NTSC judgement in (3.58/4.43)
14
MESECAM DET
I
MESECAM mode detect signal input
15
CIN (REC PRF)
I
Erasing protection tab. Cassette in detection.
16
N.C
–
Not used
17
N.C
–
Not used
18
N.C
–
Not used
19
MODE 4
I
Mechanism section CAM encoder input (data4)
20
MODE 3
I
Mechanism section CAM encoder input (data3)
21
MODE 2
I
Mechanism section CAM encoder input (data2)
22
MODE 1
I
Mechanism section CAM encoder input (data1)
23
N.C
–
Not used
24
N.C
–
Not used
25
N.C
–
Not used
26
TV/VTR
O
Not used (For NTSC model only. RF-output control)
27
N.C
–
Not used
28
SDA 0
I/O
Video Audio (Normal & Hifi) block communication signal (IIC DATA)
29
N.C
–
Not used
30
SCL 0
O
Video Audio (Normal & Hifi) block communication signal (IIC CLOCK)
31
A MUTE
O
“A” Audio mute signal output
32
T/S LED
O
Top/End LED ON/OFF control
33
N.C
–
Not used
34
N.C
–
Not used
35
CAP STOP
O
Capstain motor stop control
36
FULL ERASE
O
Full erase head control
37
N.C
–
Not used
38
N.C
–
Not used
39
MP
I
Fixed to L
40
ASURA RESET
I
System reset input
41
V ss
–
Ground
42
XTAL
–
System clock 16MHz
43
EXTAL
–
System clock 16MHz
44
ASURA CS
I
S/S microcomputer chip signal
45
S IN
I
Serial communication signal (Data input)
46
S OUT
O
Serial communication signal (Data output)
47
S CLK
O
Serial communication signal (Serial clock)
48
N.C
–
Not used
49
N.C
–
Not used
50
N.C
–
Not used
Pin No.
Pin Name
I/O
Function
51
N.C
–
Not used
52
AVSS
–
UNSW Ground
53
AVREF
–
A/D port reference input UNSW 5V
54
AVDD
–
UNSW 5V
55
NT PB SW
I
When NTSC PB mode, the color system setting signal input
56
AV ADJ
I
HiFi/RF switching adjustment mode
57
N.C
–
Not used
58
N.C
–
Not used
59
AF ENV
I
HiFi audio playback signal envelope
60
RF ENV
I
Video playback signal envelope
61
T SENS
I
Take up end sensor input
62
S SENS
I
Supply end sensor input
63
SREEL FG
I
S side reel FG input
64
TREEL FG
I
T side reei FG input
65
N.C
–
Not used
66
V SYNC
I
Composite sync input
67
PB CTL
I
Playback CTL input
68
DRM PG
I
Drum PG input
69
DRM FG
I
Drum FG input
70
CAP FG
I
Capstan FG input
71
N.C
–
Not used
72
CAP RVS
O
Capstan reverse control H when Reverse
73
CAP DA
O
Capstan error D/A output
74
DRM DA
O
Drum error D/A output
75
N.C
–
Not used
76
N.C
–
Not used
77
REC CONT
I
Record count input
78
N.C
–
Not used
79
N.C
–
Not used
80
SO1
O
Signal for serial communication (data output)
81
SCK1
O
Signal for serial communication (clock)
82
N.C
–
Not used
83
N.C
–
Not used
84
CAP TRQ PWM
O
Capstan TRQ PWM output
85
N.C
–
Not used
86
N.C
–
Not used
87
N.C
–
Not used
88
VSS
–
Ground
89
VDD
–
5V
90
N.C
–
Not used
91
N.C
–
Not used
92
CTLHYS HIGHT
O
CTL amp. Step control (Hi)
93
IN SEL1
O
LINE-INPUT selection control signal-1
94
N.C
–
Not used
95
N.C
–
Not used
96
AF REC
O
“H” output when Hifi audio REC
97
N.C
–
Not used
98
N.C
–
Not used
99
STEP PLS
O
Step pulse “H” when Capstan step driving
100
AF SWP
O
AF switching pulse output
5-5
5-7. TIMER/TUNER CONTROL MICROPROCESSOR PIN FUNCTION (FR-137 BOARD IC301)
Pin No.
Pin Name
I/O
Function
1
N.C
–
Not used (UNSW 5V)
2
POWER FAIL
I
Power failure detect signal input
3
N.C
–
Not used (UNSW 5V)
4
SIRCS IN
I
Remote control signal (SIRCS) input
5
STEREO DET
I
Not used (Pull up 5V)
6
N.C
–
Not used
7
BUZZER
O
Buzzer signal output
8
N.C
–
Not used
9
N.C
–
Not used
10
SCK 0
I
Serial communication signal (Serial clock)
11
SI 0
I
Serial communication signal (Data input)
12
SO 0
O
Serial communication signal (Data output)
13
SW2
–
Not used
14
LANC IN
I
LANC signal input
15
LANC OUT
O
LANC signal output
16
A/D 0
I
Analog voltage (KEY) input
17
A/D 1
I
Analog voltage (KEY) input
18
A/D 2
I
Analog voltage (KEY) input
19
SW1
O
For PAL and Multi model is TUNER System control
20
AFT
I
AFT (Auto fine tuning signal input)
21
H DET
I
H DET (TUNER H SYNC detect input)
22
A/D 6
I
Analog voltage (KEY) input
23
A/D 7
I
Analog voltage (KEY) input
24
AVDD
–
UNSW 5V
25
AV REF
I
A/D port reference input UNSW 5V
26
SCL 0
O
T BUS (clock)/IIC BUS (clock)
27
CG CS
O
Character generator chip select signal
28
SDA 0
O
IIC BUS (data)
29
LED CS
O
LED driver chip select signal
30
AVSS
–
Ground
31
EXTAL
O
System clock terminal (16MHz)
32
XTAL
I
System clock terminal (16MHz)
33
VSS
–
Ground
34
RST
I
RESET signal input
35
PLL CLK
O
TUNER PLL clock
36
PLL DATA
O
TUNER PLL data
37
PLL ENABLE
O
TUNER chip select
38
SAP DET
–
Not used (NTSC model only)
39
N. C
–
Not used
40
TA MUTE
O
TUNER audio mute signal output
41
DMS 2
I
DMS fowared/reverse signal input
42
DMS 1
I
DMS fowared/reverse signal input
43
VFDP
–
VFDP
44
SEG1
O
Segment terminal 1
45
SEG2
O
Segment terminal 2
46
SEG3
O
Segment terminal 3
47
SEG4
O
Segment terminal 4
48
SEG5
O
Segment terminal 5
49
SEG6
O
Segment terminal 6
50
SEG7
O
Segment terminal 7
Pin No.
Pin Name
I/O
Function
51
SEG8
O
Segment terminal 8
52
SEG9
O
Segment terminal 9
53
SEG10
O
Segment terminal 10
54
SEG11
O
Segment terminal 11
55
SEG12
O
Segment terminal 12
56
SEG13
O
Segment terminal 13
57
SEG14
O
Segment terminal 14
58
SEG15
O
Segment terminal 15
59
SEG16
O
Segment terminal 16
60
N.C
–
Not used
61
N.C
–
Not used
62
N.C
–
Not used
63
N.C
–
Not used
64
N.C
–
Not used
65
N.C
–
Not used
66
GRID6
O
Grid terminal 6
67
GRID5
O
Grid terminal 5
68
GRID4
O
Grid terminal 4
69
GRID3
O
Grid terminal 3
70
GRID2
O
Grid terminal 2
71
GRID1
O
Grid terminal 1
72
VDD
–
UNSW5V
73
TX
I
Timer clock terminal (32KHz)
74
TEX
O
Timer clock terminal (32KHz)
75
NC/VPP
–
UNSW5V
76
ASURA CS
O
S/S microcomputer chip signal
77
ASURA RESET
O
System reset output
78
WC
O
EEP ROM WRITE Control Signal
79
POWER CONT
O
Power supply control signal
80
CG V
I
Composite sync input
5-6
Pin. No.
Pin Name
I/O
Function
1
OUTL
O
Analog output left
2
OUTR
O
Analog output right
3
VDDA1
–
Analog power supply; DAC circuitry
4
VSSA1
–
Analog ground; DAC circuitry
5
VSSD1
–
Digital ground; DAC circuitry
6
VDDD1
–
Digital power supply; DAC circuitry
7
VSSD2
–
Digital ground; DSP part
8
VDDD2
–
Digital power supply; DSP part
9
TP2
I
Additional test pin 2; connected to ground for normal operation
10
NICAM
–
Not used
11
TP1
I
Additional test pin 1; connected to ground for normal operation
12
PCLK
–
Not used
13
ADDR1
–
Not used
14
Vtune
O
Tuning voltage output for crystal oscillator
15
XTALI
I
Crystal oscillator input
16
XTALO
O
Crystal oscillator output
17
TEST2
I
Test pin 2; connected to ground for normal operation
18
Iref
I
Resistor for reference current generation; front end circuitry
19
ADDR2
–
Not used
20
VSSA2
–
Analog ground; analog front end circuitry
21
VDDA2
–
Analog power supply; analog front end circuitry
22
TEST1
I
Test pin 1; connected to ground for normal operation
23
SIF2
I
Sound IF input 2
24
Vref1
I
Reference voltage; analog front end circuitry
25
SIF1
I
Sound IF input 1
26
CRST
Capacitor for power-on reset
27
VSSD3
–
Digital supply; front end circuitry
28
VDDD3
–
Digital supply; front end circuitry
29
SCL
I
Serial communication signal (IIC CLOCK)
30
SDA
I
Serial communication signal (IIC DATA)
31
SDO
–
Not used
32
WS
–
Not used
33
SCK
–
Not used
34
SYSCLK
–
Not used
35
VDDD4
–
Digital power supply; demodulator circuitry
36
VSSD4
–
Digital ground; demodulator circuitry
37
P1
–
Not used
38
MONOIN
–
Not used
39
EXTIR
I
External audio input right channel
40
EXTIL
I
External audio input left channel
41
Vref2
I
Analog reference voltage digital-to-analog converter and operational amplifiers
42
P2
–
Not used
43
VDDA3
–
Analog power supply; operational amplifiers
44
VSSA3
–
Analog ground; operational amplifiers
5-8. NICAM STEREO PROCESSOR PIN FUNCTION (NK-11 BOARD IC1)
5-6 E
6-1 E
SECTION 6
ERROR CODES
SLV-ED8/EZ8/EZ9
This set displays an error code, and a mode code in case of error
on the display tube, if the operation stopped by error.
The following provides description concerned.
on the display tube, if the operation stopped by error.
The following provides description concerned.
A: EMG code .............................................................. Table 6-1
B: Mechanism position (Encoder) .............................. Table 6-2
B: Mechanism position (Encoder) .............................. Table 6-2
These codes are displayed at lower 5-digit positions of display
tube.
tube.
Table 6-1.
EMG Codes list
Table 6-2.
Mechanism position list
Code
Description
0
NO ERROR
1
CAM ENCODER ERROR, LOAD DIRECTION
2
CAM ENCODER ERROR, UNLOAD DIRECTION
3
T REEL ERROR
4
S REEL ERROR
5
CAPSTAN ERROR
6
DRUM ERROR
7
INITIALIZE ERROR
8
CASSETTE UNLOADING ERROR
9
RESERVED
Code
Position
VTR status
0
NC
Other than the following positions
1
EJECT
EJECT (including POWER OFF)
2
CDOWN
Cassette at down position
3
ULDEND
Tape unloading end, DEW STOP
4
TLOAD
Tape loading
5
HCLEAN
Tape loading
6
LDEND
Tape loading end
7
RVS
RVS varying-speed play
(including STILL, SLOW)
8
PR
For FWD, FWDP/RVS conversion
9
FWDP
FWD SLOW, FWD STILL
A
FWD
PB, FWD varying-speed play, STOP
(DRUM ON)
B
STOP
STOP (DRUM OFF, POWER OFF)
C
FR
FF/REW
If the cam encoder alarm occurred when the mechanism was about
to move forward, and it stopped at NC position,
to move forward, and it stopped at NC position,
Position for which mechanism destined = A (FWD)
Position when emergency occurred
Position when emergency occurred
= 0 (NC),
accordingly, “A0” is displayed.
In case of emergency except cam encoder alarm or FL cassette
compartment alarm, the cam motor does not run, and therefore if
any emergency occurred at FWD position,
compartment alarm, the cam motor does not run, and therefore if
any emergency occurred at FWD position,
Position for which mechanism destined = A (FWD)
Position when emergency occurred
Position when emergency occurred
= A (FWD),
accordingly, “AA” is displayed.
* NC code is output when the mechanism is moving between re-
spective positions.
Display tube (lower 5 digits)
A
B
Position when emergency occurred
Position for which the mechanism destined
Position for which the mechanism destined
Display:
Click on the first or last page to see other SLV-ED8ME / SLV-ED8ML / SLV-EZ8AS / SLV-EZ8NZ / SLV-EZ9AS service manuals if exist.