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5-5E
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
SLV-ED115/ED215/ED313/ED515/ED616/ED815/ED817/ED818/ED915/ED919/EZ111/
EZ212/EZ414/EZ715/EZ717
6-1E
SECTION 6
ERROR CODE
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.
error 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)
7-1
SECTION 7
ADJUSTMENTS
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
ADJUSTMENT VI.
ADJUSTMENT 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, delay
2) Oscilloscope 1 or 2 phenomena, band more than 30 MHz, delay
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
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.
Alingment 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,
connected AERIAL terminal. Check that the amplitudes of video
signal 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
section.
with LINE input signal terminal. When checking with tuner,
connected AERIAL terminal. Check that the amplitudes of video
signal 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
section.
PAL
NTSC
Video output
(75
Ω)
Pattern generator
VCR
VIDEO LINE IN
Monitor TV
VIDEO LINE OUT
instruments as shown in the following diagram.
Fig. 7-2-1
Fig. 7-2-1
2-1-5.
Specified I/O Level and Impedance
Input/output terminal
Video inputs
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
SLV-ED115/ED215/ED313/ED515/ED616/ED815/ED817/ED818/ED915/ED919/EZ111/
EZ212/EZ414/EZ715/EZ717
7-2
2-1-6.
Adjusting Sequence
Make the electrical adjustment in the following sequence.
2-3.
SERVO SYSTEM ADJUSTMENT
2-3-1.
RF Switching Position Adjustment
(MA-402 BOARD)
(MA-402 BOARD)
Purpose:
Adjust the interval between A ch and B ch of tape playback output.
Improve the interchangeability with other tapes and sets.
When it is out of order, the interval appears on the screen, the screen
is disturbed.
Adjust the interval between A ch and B ch of tape playback output.
Improve the interchangeability with other tapes and sets.
When it is out of order, the interval appears on the screen, the screen
is disturbed.
Mode
PB
Signal
Alignment tape SP mode
color bar
color bar
Measurement Point
CH1: Pin 2 of CN202
CH2: Pin 3 of CN202
(RF SWP)
CH2: Pin 3 of CN202
(RF SWP)
Measuring Instrument
Oscilloscope
Specified Value
6.5
± 0.5 H (416 ± 32 µsec)
PAL
6.5
± 0.5 H (410 ± 32 µsec)
NTSC
Adjusting Method:
1) Connect MA-402 board JS401 to the GND for about 1 second
1) Connect MA-402 board JS401 to the GND for about 1 second
to activate the RF switching position adjustment mode.
2) Check appear “A P” on FL display.
3) Using the channel + and – buttons, adjust to 6.5
3) Using the channel + and – buttons, adjust to 6.5
± 0.5 H.
4) Press the pause button.
Fig. 7-2-3.
Mode
E-E
Measuring Instrument
Digital voltmeter
+F, –F check
Measurement Point
Between JL 615 (IF) and JL 614 (-F)
Specified Value
3.0
± 1.0 V
–13 V check
Measurement Point
JL 625
Specified Value
–11.0
± 1.5 V
+6 V check
Measurement Point
JL 611
Specified Value
5.95
± 0.3 V
+13 V check
Measurement Point
JL 604
Specified Value
13.5
± 1.0 V
+38 V check
Measurement Point
JL 618
Specified Value
32.0
± 4.0 V
2-2.
POWER SUPPLY ADJUSTMENT
2-2-1.
Power Supply Check
Checking Method:
1) Confirm that each voltage meets its specified value.
1) Confirm that each voltage meets its specified value.
Power supply adjustment
Servo system adjustment
Audio system
adjustment
Tuner system
adjustment
Approx. 1 Vp-p
Approx. 5 Vp-p
V
enlargement
CH2
CH1
CH2
CH1
Vertical sync. signal
6.5
± 0.5 H
(416
± 32 µsec) PAL
(410
± 32 µsec) NTSC
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