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5-4
5-5. SERVO/SYSTEM CONTROL, OSD MICROPROCESSOR PIN FUNCTION (MA-377 BOARD IC101)
Pin No.
Pin Name
I/O
Function
1
SW1
O
Tuner system control-1 signal output
2
AN GND
–
Analog ground
3
APC ERROR
I
APC error voltage signal input
4
ETR1
I
Easy timer knob pulse1 signal input
5
FUNC. KEY2
I
Function key analog voltage signal input
6
TU AFT
I
Auto fine tuning signal input
7
FUNC. KEY1
I
Function key analog voltage signal input
8
POWER FAIL
I
Power failure detect signal input
9
ETR2
I
Easy timer knob pulse2 signal input
10
DEST
I
Destination set signal input
11
S SENS
I
Supply end sensor signal input
12
T SENS
I
Take up end sensor signal input
13
VIDEO RF
I
Video RF envelop signal input
14
AU RF
I
Hi-Fi audio envelop signal input
15
UN 5V
–
Power supply analog 5V
16
RESET
I
Reset signal input
17
SW 2
O
Tuner system control 2 signal output
18
PAL
O
“H”: PAL (video block control signal output)
19
OSD MIX
O
“H”: MESECAM mode set
20
SP
–
Not used
21
NAPB
O
Normal audio PB signal output
22
VCC
–
Power supply unswitch 5V
23
AF SWP
O
AF switching pulse signal output
24
RF SWP
O
RF switching pulse signal output
25
CAP VS
O
Capstan error signal output
26
DRUM VS
O
Drum motor error signal output
27
QVD
O
Quasi VD pulse signal output
28
C ROTARY
–
Not used
29
H.AMPSW
O
“H”: A-DUB mode (CTL amp. gain control signal output)
30
COMP
–
Not used
31
CTL (+)
I/O
CTL head signal input/output (REC mode)
32
CTL (-)
I/O
CTL head signal input/output (REC mode)
33
VSS (SERVO)
–
Servo ground
34
CTL-AMP1
I
CTL amp. control signal input (gain set)
35
CTL-AMP2
I
CTL amp. control signal input (gain set)
36
CTL-AMP3
I
CTL amp. control signal input (gain set)
37
CTL-AMP OUT
O
CTL amp. control signal output (for check)
38
DRUM FG
I
Drum FG schmitt amp. input
39
DRUM PG
I
Drum PG schmitt amp. input
40
CAP FG
I
Capstan FG schmitt input
41
VCC (SERVO)
–
Power supply unswitch 5V
42
VCC (OSD)
–
Power supply OSD 5V
43
VIDEO IN
I
Composite video signal input
44
VREF
I
Reference bias and clamp bias power signal input
45
VIDEO OUT
O
Composite video signal output
46
CHAR BIAS
–
Not used
47
AFC LPF
I
AFC LPF signal input
48
AFC OSC
I
AFC oscillation signal input
49
VSS (OSD)
–
OSD ground
50
DOSC IN
I
OSC dot clock oscillator signal input
Pin No.
Pin Name
I/O
Function
51
DOSC OUT
O
OSC dot clock oscillator signal output
52
4FSC OUT
O
OSC 4fsc oscillator terminal signal output
53
4FSC IN
I
OSC 4fsc oscillator terminal signal input
54
CSYNC
I
Composite sync signal input
55
REC PRF
I
Erasing protection tab. cassette in detection signal input
56
IIC DATA
O
EEP ROM, Hi-Fi IC, RR IC, tuner/serial communication data signal output
57
IIC CLOCK
O
EEP ROM, Hi-Fi IC, RR IC, tuner/serial communication clock signal output
58
DRUM QR
O
Drum motor step driving signal output
59
PB
–
Not used
60
AF REC P
O
“L”: output when Hi-Fi audio REC pause (Not used)
61
TV/VTR
–
Not used
62
IIC CLOCK (VIDEO)
O
Video, video amp. serial communication clock signal output
63
IIC DATA (VIDEO)
O
Video, video amp. serial communication data signal output
64
BLUE BACK
O
OSD block control signal output
65
APC PWM
O
APC PWM signal output
66
CAP TRQ PWM
O
Capstan TRQ PWM signal output
67
SECAM ON
O
“L”: SECAM mode set during PB
68
TEST
I
Fixed to ground
69
32kHz (OUT)
O
Timer clock terminal (32kHz) output
70
32kHz (IN)
I
Timer clock terminal (32kHz) input
71
VSS
–
Ground
72
10MHz (IN)
I
System clock terminal (10MHz) input
73
10MHz (OUT)
O
System clock terminal (10MHz) output
74
END LED
O
Top/end LED on/off control signal output
75
POWER CONT
O
Power supply control signal output
76
RR CLK
–
Not used
77
RR DATA
–
Not used
78
OSD SELECT
O
OSD X' tal select (PAL/NTSC) signal output
79
A MUTE
O
“H”: audio mute signal output
80
WRITE CONT
O
EEP ROM write timing control signal output
81
IN SEL
O
Line-input selection control signal output
82
REMOCON
I
Remote control (SIRCS) signal input
83
CAM
O
CAM motor control signal output
84
MODE1
I
Mechanism section CAM encoder data 1 input
85
MODE2
I
Mechanism section CAM encoder data 2 input
86
MODE3
I
Mechanism section CAM encoder data 3 input
87
MODE4
I
Mechanism section CAM encoder data 4 input
88
T REEL
I
T side reel FG input
89
S REEL
I
S side reel FG input
90
FLD CS
O
FIP driver chip select signal output
91
FULL ERASE
O
Full erase head on/off control signal output
92
REC P
O
“L”: output when REC pause
93
CAP RVS
O
Capstan reverse control signal “H”: when reverse
94
CAP QR
O
Capstan step driving signal output
95
S CLOCK
O
Serial communication clock signal output
96
S IN
I
Serial communication data signal input
97
S OUT
O
Serial communication data signal output
98
PLL CLOCK
O
Tuner PLL clock signal output
99
TU ENABLE
O
Tuner PLL chip select signal output
100
PLL DATA
O
Tuner PLL data signal output
5-5
5-6. NICAM PROCESSOR PIN FUNCTION (NK-11 BOARD IC1)
Pin. No.
Pin Name
I/O
Function
1
OUT L
O
Analog signal output left
2
OUT R
O
Analog signal output right
3
VDD A1
–
Analog power supply 5V; DAC circuitry
4
VSS A1
–
Analog ground; DAC circuitry
5
VSS D1
–
Digital ground; DAC circuitry
6
VDD D1
–
Digital power supply 5V; DAC circuitry
7
VSS D2
–
Digital ground; DSP part
8
VDD D2
–
Digital power supply 5V; DSP part
9
TP2
I
Additional test pin 2; connected to ground for normal operation
10
N.C.
–
Not used
11
TP1
I
Additional test pin 1; connected to ground for normal operation
12
N.C.
–
Not used
13
N.C.
–
Not used
14
V TUNE
O
Tuning voltage output for crystal oscillator
15
XTAL I
I
Crystal oscillator input
16
XTAL O
O
Crystal oscillator output
17
TEST2
I
Test pin 2; connected to ground for normal operation
18
I REF
I
Resistor for reference current generation; front end circuitry
19
N.C.
–
Not used
20
VSS A2
–
Analog ground; analog front end circuitry
21
VDD A2
–
Analog power supply 5V; analog front end circuitry
22
TEST1
I
Test pin 1; connected to ground for normal operation
23
SIF2
I
Sound IF input 2
24
V REF1
I
Reference voltage; analog front end circuitry
25
SIF1
I
Sound IF input 1
26
C RST
Capacitor for power-on reset
27
VSS D3
–
Digital ground; front end circuitry
28
VDD D3
–
Digital power supply 5V; front end circuitry
29
SCL
I
Serial communication clock signal input
30
SDA
I
Serial communication data signal input
31
N.C.
–
Not used
32
N.C.
–
Not used
33
N.C.
–
Not used
34
N.C.
–
Not used
35
VDD D4
–
Digital power supply 5V; demodulator circuitry
36
VSS D4
–
Digital ground; demodulator circuitry
37
N.C.
–
Not used
38
N.C.
–
Not used
39
EXTI R
I
External audio input right channel
40
EXTI L
I
External audio input left channel
41
V REF2
I
Analog reference voltage digital-to-analog converter and operational amplifiers
42
N.C.
–
Not used
43
VDD A3
–
Analog power supply 5V; operational amplifiers
44
VSS A3
–
Analog ground; operational amplifiers
5-7. ZWEITON PROCESSOR PIN FUNCTION (GK-12 BOARD IC001)
Pin. No.
Pin Name
I/O
Function
1
OUT L
O
Audio left signal output
2
OUT R
O
Audio right signal output
3
CDE1
–
De-emphasis 1 capacitor
4
N.C.
–
Not used
5
N.C.
–
Not used
6
CDE2
–
De-emphasis 2 capacitor
7
A GND
–
Analog ground
8
AF1 I
I
Audio 1 signal input
9
N.C.
–
Not used
10
AF1 O
O
Audio 1 signal output
11
N.C.
–
Not used
12
N.C.
–
Not used
13
AFR
I
AF 1/2 signal return
14
LF1
–
Loop filter 1
15
XTAL
I
4MHz reference input
16
N.C.
–
Not used
17
N.C.
–
Not used
18
LF2
–
Loop filter 2
19
N.C.
–
Not used
20
N.C.
–
Not used
21
MAD
I
Programmable address bit (module address)
22
N.C.
–
Not used
23
N.C.
–
Not used
24
CAF1
O
AF1 capacitor
25
IF INT
I
IF intercarrier input
26
CAF2
O
AF2 capacitor
27
D GND
–
Digital ground
28
VCC
–
Power supply 5V
29
SCL
I
Serial communication clock input
30
SDA
I/O
Serial communication data input and output
31
LPF
–
Pilot loop filter
32
AF2 O
O
Audio 2 signal output
33
AF2 I
I
Audio 2 signal input
34
CTR IG
–
Trigger capacitor
35
CID
–
Identification capacitor
36
N.C.
–
Not used
37
P1
O
Output port 1
38
EXT M
I
External audio input monaural channel
39
EXTI R
I
External audio input right channel
40
EXTI L
I
External audio input left channel
41
V REF
I
Analog reference voltage digital-to-analog converter and operational amplifiers
42
P2
O
Output port 2
43
OUT M
O
Audio monaural signal output
44
N.C.
–
Not used
5-5 E
6-1 E
SECTION 6
ERROR CODES
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: Error code ............................................................... Table 6-1
B: Mode code in case of error .................................... Table 6-2
B: Mode code in case of error .................................... Table 6-2
These codes are displayed at lower 5-digit positions of display
tube.
In this case, “ : ” between digits is not displayed.
tube.
In this case, “ : ” between digits is not displayed.
Table 6-1.
Error Codes
Table 6-2.
Mode Codes in Case of Error
Display tube (lower 5 digits)
A
B
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
Description
0
EJECT (POWER ON)
1
EJECT (POWER OFF)
2
UNLOAD STOP
3
STOP (POWER ON)
4
POWER OFF (CASSETTE IN)
5
F. FWD
6
REW
7
LOW SPEED F. FWD
8
LOW SPEED REW
9
STANDBY
10
REC
11
REC (VISS)
12
REC PAUSE
13
PLAY
14
A. DUB
15
A. DUB PAUSE
16
CUE
17
REV
18
STILL (MECHA FWD)
19
FWD FRAME BY FRAME (FWD SLOW)
20
STILL (MECHA RVS)
21
RVS FRAME BY FRAME (RVS SLOW)
SLV-ED15/ED25/ED33/ED39/ED55/ED66/ED85/ED88/ED89/ED95/EZ11/EZ22/EZ44/
EZ66/EZ77
7-1
SECTION 7
ADJUSTMENTS
SLV-ED15/ED25/ED33/ED39/ED55/ED66/ED85/ED88/ED89/ED95/EZ11/EZ22/EZ44/
EZ66/EZ77
1
2
3
4
Mode
SP
SP
EP
EP
Video signal
Color bar
Monoscope
Color bar
Monoscope
Audio signal
(HiFi/Normal)
400 Hz
Time
Seven minutes
Three minutes
Seven minutes
Three minutes
7-1. MECHANICAL ADJUSTMENTS
Refer to the SERVICE MANUAL of VHS MECHANICAL AD-
JUSTMENT VI.
JUSTMENT VI.
7-2. ELECTRICAL ADJUSTMENTS
2-1.
PRE-ADJUSTMENT PREPARATIONS
Necessary items and indications for total adjustment of electric
circuit of this machine will be described in this chapter.
circuit of this machine will be described in this chapter.
2-1-1.
Instruments to be Used
1) Color TV
2) Oscilloscope 1 or 2 phenomena, band more than 30 MHz, de-
2) Oscilloscope 1 or 2 phenomena, band more than 30 MHz, de-
lay mode, as provided.
3) NTSC pattern generator
4) PAL pattern generator
5) Digital voltmeter
6) Audio level meter
7) Audio noise meter
8) Audio generator
9) Attenuator
10) Alignment tape
4) PAL pattern generator
5) Digital voltmeter
6) Audio level meter
7) Audio noise meter
8) Audio generator
9) Attenuator
10) Alignment tape
Part Code: 8-192-605-36 KRV-51P (PAL)
Part Code: 8-192-605-32 KRV-51N2 (NTSC)
Part Code: 8-192-605-32 KRV-51N2 (NTSC)
2-1-2.
Connection
Unless otherwise specified, connect and adjust the measuring in-
struments as shown in the following diagram.
struments as shown in the following diagram.
During the adjustment, see the Parts Arrangement
Diagram for Adjustments on Page 7-6.
Diagram for Adjustments on Page 7-6.
Fig. 7-2-2
2-1-4.
Alignment Tapes
[Alignment Tape (KRV-51N2/KRV-51P)]
2-1-3.
Set-up of Adjustment
In this adjustment, PAL or NTSC pattern generator is connected
with LINE input signal terminal. When checking with tuner, con-
nected AERIAL terminal. Check that the amplitudes of video sig-
nal SYNC signal, of picture portions, and of burst signals are flat
at approximately 0.3, 0.7 and 0.3 V, respectively, and that the level
ratio of the burst signal and “red” signal are 0.30: 0.66. Fig. 7-2-2.
shows video signals (color bars) used in adjusting the video sec-
tion.
with LINE input signal terminal. When checking with tuner, con-
nected AERIAL terminal. Check that the amplitudes of video sig-
nal SYNC signal, of picture portions, and of burst signals are flat
at approximately 0.3, 0.7 and 0.3 V, respectively, and that the level
ratio of the burst signal and “red” signal are 0.30: 0.66. Fig. 7-2-2.
shows video signals (color bars) used in adjusting the video sec-
tion.
PAL
NTSC
Video output
(75
Ω
)
Pattern generator
VCR
VIDEO LINE IN
Monitor TV
VIDEO LINE OUT
Fig. 7-2-1
2-1-5.
Specified I/O Level and Impedance
Input/output terminal
Video inputs
LINE IN
: phono jack
1 Vp-p, 75
Ω
, unbalanced, sync negative
Audio inputs
LINE IN
: phono jacks
47 kW, –7.5 dBs (0 dBs = 0.775 Vrms)
More than 10 kW, –4 dBs
More than 10 kW, –4 dBs
Video outputs
LINE OUT: phono jack
1 Vp-p, 75
1 Vp-p, 75
Ω
, unbalanced, sync negative
Audio outputs
LINE OUT: phono jacks
–7.5 dBs at load impedance 47 k
–7.5 dBs at load impedance 47 k
Ω
Output impedance : less than 10
Ω
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