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Sanyo VHR-390EX Service Manual page 6

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S1 14212(I) 1/2
2. ELECTRICAL ADJUSTMENT
PREPARATION
This VCR need 4 basic presetting by using the menus displayed on-screen.
After all connection have been made, then follow steps 1 to 4 to preset the VCR
The 4 presetting steps will be displayed in sequence on TV screen. The setting are entered with the remote control.
Turn on the VCR
1.
Adjusting the TV receiver to the video channel: The WELCOME screen will appear. When the video channel has been preset,
press the OK button on the remote control.
2.
Language selection: Select the desired language, then press the OK button.
3.
Clock setting: Using the remote control numeric buttons, enter the date and time, press the OK button.
4.
Tuning control adjustments:
When the channel position has been preset, press the MENUflV
button.
When steps 1 to 4 have been finish, ready to operate the all operating mode.
2-1. SERVO CIRCUIT ADJUSTMENT
These adjustments should be carried out upon completion of the tape transport adjustments.
.
If the tape transport adjustments (except the tilt adjustment) are carried out after these adjustments, follow the procedures
again in Section 2-1-3. SWITCHING
POSITION ADJ.
When a cassette tape is loaded, auto-tracking will be set immediately
after starting the first playback. As this will deviate the
tracking center set, be sure to press the channel buttons (+) or (-) once directly after starting playback to prevent auto-tracking
from being set.
2-1-1. TEST EQUIPMENT
AND STANDARDS
REQUIRED
Oscilloscope
Vertical sensitivity: 5 mV/DIV, external trigger
Band width: more than 10 MHz
Test Tape
VHJ-0009 or VHJ-0023: SP mode, monoscope, 6 KHz
Blank Tape
VHS-type cassette tape
Monitor TV
.A:"
H.
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2-1-2. LOCATION
OF ADJUSTMENT
POINTS
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IC301
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IC231
TP~34
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0
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IC351
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IC303
:
:
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:: .1
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~:
VR104
::
::
;:
-----
t
VR102
DEV
IC162
::
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.0
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cT120
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1
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A CXJT
.. . .. . .. .. ... . .. ....- 2
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TP102@:~::~::~ ::~; @TP103
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..... ..... ..... %...
CP-I PWB (FOIL SIDE)
Fig. 2.1.1
"'u'
–6–

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