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8. ELECTRICAL MECHANISM
216
RH-9820
Problem #8 Work clamp is not lowered during sewing.
Cause
Inspection/Remedy/Adjustment
Replacement if a malfunction
Malfunction of valve or valve harness
1) Check that connector P12 (AIR1) is
inserted into the main P.C. board.
2) Check the air.
Valve harness
Problem #9 Hammer does not operate (When set to cutting before sewing).
Cause
Inspection/Remedy/Adjustment
Replacement if a malfunction
Malfunction of valve or valve harness
Check that connector P25 (AIR2) is inserted
into the main P.C. board.
Valve harness
Problem # 10 Sewing machine does not operate during sewing and [E120] is displayed.
Cause
Inspection/Remedy/Adjustment
Replacement if a malfunction
1.
Malfunction of sewing machine
motor cord
Check connector P4 (UVW) of the power
supply motor P.C. board and the sewing
machine motor connector.
Motor cable
2. If the fuse (F1) on the power supply
motor P.C. board is blown, there is
a malfunction of the main P.C.
board.
1) If the fuse (F1) is blown, check the
resistance values between all pins of the
connector P4 (UVW) and the pins of the
fuse (
∞ Ω
) and replace the fuse.
2) If the fuse blows again, replace the power
supply motor P.C. board.
Power supply motor P.C.
board
3. Sewing machine motor overheats
and the thermostat inside the motor
operates when the sewing machine
is operated at short cycle.
1) Turn off the power and let the sewing
machine stand for 30 minutes or more.
2) Turn the power back on; OK if operation is
normal.
Avoid repeated sewing of sewing data that is
less than 15 stitches.
Motor cable
Содержание RH-9820
Страница 7: ...RH 9820 v Belt cover Rear 0331B 0332B 0334B 0486B 0485B 0333B ...
Страница 46: ...4 MECHANICAL DESCRIPTIONS RH 9820 37 ...
Страница 58: ...5 DISASSEMBLY RH 9820 49 5 10 Lubrication 1089B ...
Страница 124: ...6 ASSEMBLY RH 9820 115 6 19 Covers 1064B ...
Страница 210: ...8 ELECTRICAL MECHANISM 201 RH 9820 PMD P C board Power supply motor P C board 0693B 4593Q ...
Страница 211: ...8 ELECTRICAL MECHANISM 202 RH 9820 Panel P C board 0694B ...
Страница 217: ...8 ELECTRICAL MECHANISM 208 RH 9820 0761B ...
Страница 218: ...8 ELECTRICAL MECHANISM 209 RH 9820 0762B ...
Страница 236: ...SERVICE MANUAL RH 9820 I6100920B 2007 03 B 1 Printed in Japan ...