Read Sharp DV-L88 (serv.man6) Service Manual online
DV-L88S/S(H)
DV-L88W/W(A)
DV-L88W/W(A)
15
BATTERY END VOLTAGE ADJUSTMENT
1. Initial setting
(1) Power supply
Input 6.15V
±
0.05V to the DVD battery.
Note1) Set the voltage on the DC input jack PWB of the main unit to the value specified above in the condition of
DVD start-up (LCD lit).
Note 2) Check the voltage with a calibrated measuring instrument. In case that drift is worried, check the voltage
periodically.
2. Battery end voltage adjusting procedure and method
(1) Select the battery detection error compensation adjustment mode.
1
Turn on the main power switch on while pressing the “UP” “DOWN” keys of the main unit at the same time.
2
Press the mode selection key.
3
Press the sound volume down button twice to enter the battery adjusting screen.
4
With button changing button, make the cross key to the cursor mode. (With 70 type remote controller, the cursor
key can be used for operation as it is.)
(2) Adjust with the right and left key so that the “BAT” value displayed on the LCD becomes “0”.
No.
Item
Checked place
Checking method
Standard, condition
Remarks
1
S image Y output
S terminal
1. Play the test disc TDV - 581A.
2. Check the Y output with an
2. Check the Y output with an
1Vp-p
±
0.15Vp-p
S terminal Y output
oscilloscope.
Measure at 75
Ω
termination.
2
S image C output
S terminal
1. Play the test disc TDV - 581A.
2. Check the C output with an
2. Check the C output with an
0.286Vp-p
±
0.15Vp-p
S terminal C output
oscilloscope.
Measure at 75
Ω
termination.
3
Error rate check
Display
1. Press the STOP key and the
V-CD:TDV-581A
When playing back.
PLAY key of the main unit key 20/4
at the same time and check
the error rate displayed on the
display.
at the same time and check
the error rate displayed on the
display.
DVD:TV-501
38/76
38/76
4
Flash memory
Display
1. Press the return key and the
Model name of the
When NO DISC.
check
VOL-UP key of the main unit
software
key at the same time.
Region code
Transmit the numeric number
Software Ver.
key of R/C (1), next transmit
play to check the model name
and the region code, and
transmit play again to check
the software Ver.
play to check the model name
and the region code, and
transmit play again to check
the software Ver.
5
Sound level check
Audio output
Play the title 49, chapter 1AC - 320 1.35Vrms
±
0.3Vrms
L/R
mode of the test disc TV - 501 to
check the sound output level.
check the sound output level.
6
Digital sound
Digital sound
Connect the digital surround
The sound from the digital
output check
output
processor to the digital sound
surround processor must
output and play the VCD to check be played properly.
the sound output from the digital
surround processor.
the sound output from the digital
surround processor.
7
Distorted disc
Played image
Play the test disc TDV - 533 to
It must be normally played.
playback check
check the played image on the
* No EJECT, rickety play
monitor screen.
or staying in LOAD
condition are allowed.
condition are allowed.
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