5 - 8
Failure Investigation for Electronic Parts Main motor rotation abnormal
• Is there rotational variance in the main motor?
or
• Does the rotation not reach top speed?
or
• Can the speed not be adjusted?
Replace SSVR PCB assy.
When the power is turned ON and
the speed control lever moved, does
the voltage across pins 2-3 of CN2
(S2) or CN1 (S3) on the operation
PCB assy. vary 0.7-4.3V DC?
N
Replace NP PCB-S assy.
Replace main PCB assy.
When the upper shaft pulley is turned
slowly by hand, does the voltage across
pins 2-1 of CN1 (S2) or CN2 (S3) on
the main PCB assy. vary 0-5V DC?
N
Y
Replace motor PCB assy.
Have parts Q1, Q4, Q5, R1, R2, R4,
R6, D1 or ZD1 on the motor PCB assy.
become discolored or burned?
Y
N
Y
S2 : CS8000 Series
S3 : CS8100 Series
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Summary of Contents for CS8000 Series
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Page 22: ...2 2 Main partslocation diagram Main unit www promelectroavtomat ru ...
Page 38: ...2 18 Upper shaft mechanismlocation diagram Main unit www promelectroavtomat ru ...
Page 45: ...2 25 Disassembly Thread tension mechanismlocation diagram Main unit www promelectroavtomat ru ...
Page 53: ...2 33 Disassembly Thread hook mechanism location diagram Main unit www promelectroavtomat ru ...
Page 56: ...2 36 Needle presser module breakout diagram Modules www promelectroavtomat ru ...
Page 65: ...2 45 Disassembly Feed module breakout diagram Modules www promelectroavtomat ru ...
Page 74: ...3 2 Thread tension mechanism location diagram Main unit www promelectroavtomat ru ...
Page 85: ...3 13 Assembly Thread hook mechanism location diagram Main unit www promelectroavtomat ru ...
Page 88: ...3 16 Upper shaft mechanism location diagram Main unit www promelectroavtomat ru ...
Page 115: ...3 43 Assembly Main parts location diagram Main unit www promelectroavtomat ru ...
Page 120: ...3 48 Needle presser modulebreakout diagram Modules www promelectroavtomat ru ...
Page 136: ...3 64 Feed module breakout diagram Modules www promelectroavtomat ru ...
Page 201: ...6 1 6Repair Manual www promelectroavtomat ru ...
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