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5-5
5-5 E
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
1
1
TP1
I
Additional test pin 1; connected to ground for normal operation
12
PCLK
–
Not used
13
ADDR1
–
Not used
14
Vtune
O
T
uning voltage output for crystal oscillator
15
XT
ALI
I
Crystal oscillator input
16
XT
ALO
O
Crystal oscillator output
17
TEST2
I
T
est 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
T
est 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
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 DA
T
A
)
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
V
ref2
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
5-6.
NICAM PR
OCESSOR PIN FUNCTION (NK-11 BO
ARD IC1)
6-1 E
SECTION 6
ERROR CODES
SLV-ED1/ED2/ED3/ED4/ED5/ED6/ED7/EZ1/EZ4/EZ7
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 FRAM BY FRAM (FWD SLOW)
20
STILL (MECHA RVS)
21
RVS FRAM BY FRAM (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 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 check to 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 check to 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
SLV-ED1/ED2/ED3/ED4/ED5/ED6/ED7/EZ1/EZ4/EZ7
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
7-2
2-1-6.
Adjusting Sequence
Make the electrical adjustment in the following sequence.
Checking power supply
Servo system adjustment
Audio system adjustment
2-3.
SERVO SYSTEM Adjustment
2-3-1.
RF Switching Position Adjustment
(MA-323 Board)
(MA-323 Board)
Purpose:
Adjust the interval between A ch and B ch of tape playback out-
put.
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 out-
put.
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: VIDEO LINE OUT
CH2: Pin 2 of CN501
(RF SWP)
CH2: Pin 2 of CN501
(RF SWP)
Measuring Instrument
Oscilloscope
Specified Value
6.5 ± 0.5 H (416 ± 32 µsec)
PAL
PAL
6.5 ± 0.5 H (410 ± 32 µsec)
NTSC
NTSC
Adjusting Method:
1) Connect MA-323 board JS140 to the GND for about 1 secont
1) Connect MA-323 board JS140 to the GND for about 1 secont
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 ± 0.5 H.
4) Press the pause button.
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
–10 V check
Measurement Point
Pin 9 of CN600
Specified Value
–10.3 ±0.8 V
+6 V check
Measurement Point
Pin 7, 8 of CN600
Specified Value
5.9 ± 0.2 V
+13 V check
Measurement Point
Pin 2, 3 of CN600
Specified Value
13.3 ± 0.5 V
+35 V check
Measurement Point
Pin 1 of CN600
Specified Value
38.0 ± 3.0 V
2-2.
POWER SUPPLY ADJUSTMENT
2-2-1.
Power Supply Check
HS-921SF/921SF1 BOARD,
SR-708/718 BOARD
HS-921SF/921SF1 BOARD,
SR-708/718 BOARD
Checking Method:
1) Confirm that each voltage meets its specified value.
1) Confirm that each voltage meets its specified value.
2-2-2.
+6 V Adjustment
HS-921SF/921SF1 BOARD,
SR-708/718 BOARD
HS-921SF/921SF1 BOARD,
SR-708/718 BOARD
Approx. 1 Vp-p
Approx. 5 Vp-p
V
enargement
CH2
CH1
CH2
CH1
Vertical sync. signal
6.5
±
0.5 H
(416
±
32
µ
sec) PAL
(410
±
32
µ
sec) NTSC
Mode
REC or PB
Measuring Instrument
Digital voltmeter
Measurement Point
Pin 7, 8 of CN201
Adjusting Element
RV201 (HS-921SF/921SF1
BOARD)
BOARD)
VR201 (SR-708/718
BOARD)
BOARD)
Specified Value
5.9 ± 0.2 V
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