Sharp VC-MH705HM/LM Service Manual page 13

VC-MH705HM/LM
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VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
ADJUSTMENT OF PB Level Confirmation
Measuring Osiloscope
instrument
Mode Playback
Cassette Self-recorded/Playback tape
Test point VIDEO OUT port
(75Ω terminal)
VIDEO Colour Bar
Specification Check place 1.
(1±0.2Vp-p)
1.0Vp-p
ADJUSTMENT OF S-PICUTRE Confirmation
Measuring Osiloscope
instrument
Mode Recorded/Playback
Cassette
Self-recorded/Playback tape
Test point VIDEO OUT
VIDEO mono-sco
Receive the mono-sco.
Confirmation : make sure no black split at the mono-sco
picuture during the self-Rec PB when the S-PICTURE is
ON with the S-PICTURE ON/OFF,make sure the pinture
level at the wedge part is change.
(S-PICUTRE ON - about 260 line)
(S-PICUTRE OFF about 240 line)
Measure the picture out-
put port using the 75Ω
terminal Osiloscope and
confirm the diagram same
as the left diagram.
~ V:200mV/div
H:20µsec/div
Digitized in Heiloo the Netherlands
HIFI Audio Circuit ADJUSTMENT
ADJUSTMENT OF EE Level Confirmation HIFI
Lch, Rch
Measuring Voltmeter
instrument
Mode EE
Cassette Optional
Test point AUDIO OUT
VIDEO Optional
AUDIO AUDIO IN at 1KHz -3.8dBs
Specification -3.8±2dBs
ADJUSTMENT OF PB Level Confrimation HIFI
Lch, Rch
Measuring Voltmeter
instrument
Mode Playback
Cassette Alignment Tape VRO-CBFF
Test point AUDIO OUT
VIDEO Optional
AUDIO Optional
Specification -3.8±2dBs
~ For this item, variable the tracking switch, and confirm
the changing of the normal mode.
ADJUSTMENT OF HIFI Lch, Rch Sela Rec/PB
Level Confirmation HIFI Lch, Rch
Measuring Voltmeter
instrument
Mode Recorded/Playback
Cassette Self-recorded tape
Test point AUDIO OUT
VIDEO Optional
AUDIO AUDIO IN at 1KHz -3.8dBs
Specification -3.8±2dBs
32
6/17/2019
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