Hitachi DV-P415U Service Manual page 26

No Search Operation
No
MIRR, SIC1-157
output is normal?
Yes
Check RIC1 peripheral circuit.
No
Actual velocity occurs
Check SIC1 peripheral circuit.
at SIC1-34 terminal?
Yes
Actual velocity occurs No
Check SIC3 peripheral circuit.
at SIC4-32, 33 terminal?
Yes
TE occurs in
No
search range?
Yes
See "Fine Seek Check"
No
RFAGCO, RIC1-72
output level is normal?
Check pick-up.
Yes
No
A
Focus On?
FINE SEEK Check
FINE SEEK MIRR
Yes
Check RIC1 Peripheral curcuit.
signal (RIC1-46) is missing?
No
TZCO signal
No
Check SIC1 Peripheral curcuit.
(SIC1-24) is occurs?
Yes
No
Track incomming is
Time out due to many jump counts.
delayed?
Yes
No
TE is within
2V and 3V?
Yes
No
Pick-up transfer smooth.
Yes
Check MECHA.
Check SIC1 peripheral circuit. Check DCN1 and pick-up.
SIC1-33 output No
is normal?
Yes
Check RIC1-26 terminal.
SIC3-28, 29
No
terminal outputs are
normal?
Yes
Check SIC3 peripheral circuit.