Read Sharp VC-M305HM (serv.man7) Service Manual online
30
VC-M305HM/LM
VC-M315HM/LM
VC-M315HM/LM
Mode
EE
ADJUSTMENT OF Receive Image CH
Confirm that there is no noise and beat in the receiving strenght
and weakness electrics signal.
and weakness electrics signal.
Measuring
instrument
instrument
Mode
Cassette
Oscilloscope
Playback
Self-recorded/Playback tape
Test point
VIDEO OUT port
(75
(75
Ω
terminal)
Specification
Check place 1.
(1
(1
±
0.2Vp-p)
VIDEO
Colour Bar
ADJUSTMENT OF PB Level Confirmation
1.0Vp-p
Measure the picture out-
put port using the 75
put port using the 75
Ω
ter-
minal Oscilloscope and
confirm the diagram same
as the left diagram.
confirm the diagram same
as the left diagram.
~
V:200mV/div
H:20
H:20
µ
sec/div
Measuring
instrument
instrument
Mode
Cassette
Oscilloscope
Recorded/Playback
Self-recorded/Playback tape
Test point
VIDEO OUT
VIDEO
mono-sco
ADJUSTMENT OF S-PICTURE Confirmation
Receive the mono-sco.
Confirmation : make sure no black split at the mono-sco
picture during the self-Rec PB when the S-PICTURE is
ON with the S-PICTURE ON/OFF,make sure the picture
level at the wedge part is change.
Confirmation : make sure no black split at the mono-sco
picture during the self-Rec PB when the S-PICTURE is
ON with the S-PICTURE ON/OFF,make sure the picture
level at the wedge part is change.
(S-PICTURE ON - about 260 line)
(S-PICTURE OFF about 240 line)
(S-PICTURE OFF about 240 line)
Measuring
instrument
instrument
Mode
Digital Voltmeter
EE
Specification
2.5
±
0.5V
TUNER/IF Circuit ADJUSTMENT
ADJUSTMENT OF AFT Adjustment
Confirmation(except France)
Confirmation(except France)
Test point
TU101 pin23
E-12ch, Input level 70dB
µ
While selecting channel input TEST MODE(press once
on TEST KEY R/C) and select E-12ch.
on TEST KEY R/C) and select E-12ch.
(Just Tuning)
Adjustment
ADJUSTMENT OF AFT Adjustment
Confirmation(France)
Confirmation(France)
F-10ch, Input level 70dB
µ
While selecting channel input TEST MODE(press once
on TEST KEY R/C) and select F-10ch.
(Just Tuning)
on TEST KEY R/C) and select F-10ch.
(Just Tuning)
F-4ch, Input level 70dB
µ
While selecting channel input TEST MODE(press once
on TEST KEY R/C) and select F-4ch.
(Just Tuning)
on TEST KEY R/C) and select F-4ch.
(Just Tuning)
HM
I40ch
LM
I-Jch
Measuring
instrument
instrument
Mode
Digital Voltmeter
EE
Specification
2.5
±
0.5V
Test point
TU101 pin23
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