Read Sharp DV-HR300H (serv.man8) Service Manual online
19
DV-HR300S/HR350S
DV-HR300H
DV-HR300X
DV-HR300H
DV-HR300X
FLOW CHART No.10
V
ideo signal recording is impossible.
Is E-E signal output?
YES
NO
NO
Are drive controls of IC7506 and HDD working
properly?
Refer to Flow chart No.2 "Drive is not working properly
(communication failure with IC7506)" or Flow chart No.3
"HDD is not working properly (communication failure with
IC7506)".
YES
NO
Is digital data input to each pin of IC7304?
IC7304 pins 16-23 VDI_656 [0-7]
YES
NO
Is 81MHz clock signal MMCLK output to IC7304 pin
118?
Check IC7304 and peripheral circuits.
YES
NO
Is 81MHz clock signal MMCLK output to pin 38 of
IC7306 and 7307?
Refer to Flow chart No.4 "Recording is impossible
(MPEG stream check)".
Check MMCLK lines between IC7304 pin 1
18 and pin 38 of
IC7306 and 7307.
YES
Refer to Flow chart No.9 "Image E-E does not appear".
Check digital data lines between pins of IC3507 and IC7304.
IC3507 pins 1
1-18
→
IC7304 pins 16-23 VDI_656 [0-7]
Click on the first or last page to see other DV-HR300H (serv.man8) service manuals if exist.