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(7) Set the VCR to the EVR mode by transmitting the code
(F1) from the Jig RCU.
(8) Set the EVR address to (F2) by transmitting the code (F3)
from the Jig RCU.
(9) Transmit the code (F4) from the Jig RCU to adjust so that
the higher level channel becomes the specified value (G)
of the note "B" level as shown in Fig. 3-3-3b. (Adjust be-
fore recording, then confirm it by playing back.)
(10) After adjustment, record the signal (A3) then playing it
back again. At this time, confirm that there is no invert-
ing phenomenon or noise appearing on the playback
screen.
(11) Release the EVR mode of the VCR by transmitting the
code (F1) from the Jig RCU again. (When the EVR mode
is released, the adjusted data is memorized.)
(12) Repeat steps (3) to (11) in the mode (B2).
Note:
• After adjusting, always perform the confirmation and
re-adjustment of the item 3.4.1.
Fig. 3-3-3b REC color (colour) level
3.3.4 Video EQ (Frequency response)
Signal
Mode
Equipment
Measuring point (D1)
Frequency marker(D2)
External trigger
EVR mode
EVR address
Specified value
Adjustment tool
(1) Apply the external trigger signal to D.FF (E) to observe
the Y OUT waveform at the measuring point (D1).
(2) Record the signal (A2) in the mode (B1), and play back
the recorded signal.
(3) Set the VCR to the manual tracking mode.
(4) Set the VCR to the EVR mode by transmitting the code
(F1) from the Jig RCU.
(5) Set the EVR address to (F2) by transmitting the code (F3)
from the Jig RCU.
(6) Set the slope of the oscilloscope to the channel having
higher (D2) marker level of the Y OUT waveform [signal
(A2)]. Then set the 100 kHz marker level to the "4" scale
on the oscilloscope. In this condition, transmit the code
(F4) from the Jig RCU to adjust so that the (D2) marker
level reaches the specified value (G).
Specified
value (G)
V. rate
•
(A1)
Ext. S-input
•
(A2)
Video sweep signal
•
(B1)
S-VHS SP
•
(B2)
S-VHS EP
•
(B3)
Picture Control / Smart Picture
REC : Normal / Natural
PB
: Edit / Distinct
•
(C)
Oscilloscope
•
Y OUT terminal (75Ø terminated)
•
3.58 [MHz]
•
(E)
TP111 (D.FF)
•
(F1)
Jig code "57"
•
(F2)
A : 03
•
(F3)
Jig code "20" and "23"
•
(F4)
Jig code "18" or "19" (Channel +/-)
•
(G)
SP: 3.2 ± 0.2 div. (–2 ± 0.5 dB)
•
EP: 2.8 ± 0.2 div. (–3 ± 0.5 dB)
•
(H)
Jig RCU [PTU94023B]
Published in Heiloo Holland
(7) Release the EVR mode of the VCR by transmitting the
code (F1) from the Jig RCU again. (When the EVR mode
is released, the adjusted data is memorized.)
(8) Repeat steps (2) to (7) in the mode (B2).
100 kHz
Scale 4
Four scale
(4 div.)
Specified
value (G)
Fig. 3-3-4a
Video EQ (Frequency Response)
3.3.5 Auto picture initial setting
•
Signal
(A1)
Ext. input
•
(A2)
Video: Optional
•
(A3)
VHS tape
•
Mode
(B1)
VHS
•
EE ¥ Auto adjust (SP/EP REC ¥ PB)
(B2)
•
Adjustment part
(F)
Jig code "58"
•
Specified value
(G)
STOP mode
•
Adjustment tool
(H)
Jig RCU [PTU94023B]
(1) Insert the cassette tape (A3) to set the mode (B1).
(2) Set the VCR to the Auto adjust mode by transmitting the
code (F) from the Jig RCU. When the VCR enters the
stop mode, the adjustment is completed. When the VCR
enters the eject mode, repeat steps (1) to (2) again.
3.4 Audio circuit
Notes:
• This adjustment should be done after the "REC color
(colour) level adjustment" for the video circuit has
been completed.
• GND (Ground) should be taken from the Tuner shield
case.
3.4.1 Audio REC FM
•
Signal
(A1)
Ext. input
•
(A2)
Audio: No signal
•
(A3)
Video: Color (colour) bar signal [NTSC]
•
Mode
(B)
S-VHS EP
•
TBC: OFF
•
Equipment
(C)
Oscilloscope
•
Measuring point (D)
TP2253 (A. PB-FM) [Main board]
•
External trigger
(E)
TP111 (D.FF)
•
EVR mode
(F1)
Jig code "57"
•
EVR address
(F2)
A : 30
•
(F3)
Jig code "23" and "20"
•
(F4)
Jig code "18" or "19" (Channel +/-)
•
Specified value
(G1)
500 ± 100 mVp-p
•
(G2)
More than 350 mVp-p
•
Adjustment tool
(H)
Jig RCU [PTU94023B]
(1) Apply the external trigger signal to D.FF (E) to observe
the Audio PB FM waveform at the measuring point (D).
(2) Record the signal (A3) with no audio signal input in the
mode (B), and play back the recorded signal.
(3) Set the VCR to the manual tracking mode.
29/11/2016
1 MHz 2 MHz
Frequency
marker (D2)
5 MHz
V. rate
3-4
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