Brother HE-800A Service Manual page 136

6. ELECTRIC COMPONENTS AND SOFTWARE
P6 [POWER]
Pin no.
1 P8V (+8V)
2 0V
3 N8V (-8V)
4 OV. det
5 RY. out
6 OV. FAULT
7 +5V
8 PHOTO
9 U
10 V
11 W
12 U
13 V
14 W
15 IPM. FAULT
P7 [PEDAL]
Pin no.
1 P8V (+8V)
2 PEDAL signal
3 0V
4 N8V (-8V)
P9 [HPEDAL] Standing operation pedal (option)
Pin no.
1 P8V (+8V)
2 Work clamp (FORSW) signal
3 Backward (BAKSW) signal
4 0V
5 Spare (INCHSW) signal
6 Start (PRSW) signal
7 Spare (HPEDAL) signal
P10 [HEAD]
Pin no.
1 Stop NC signal
2 0V
3 Stop NO signal
4 +24V
5 -
6 0V
7 +5V
8 Thread breakage detection signal
9 -
10 P8V (+8V)
11 0V
128
Signal name
Signal name
Signal name
Signal name
Probable symptoms due to poor contact
• The power indicator of operation panel does not illuminate.
• The machine motor does not turn.
Probable symptoms due to poor contact
• The home position can not be found.
• Work clamp does not operate.
• The machine does not operate.
• One of error E-30, E-31 and E-32 is displayed.
Probable symptoms due to poor contact
• The home position can not be found.
• Work clamp does not operate.
• The machine does not operate.
• One of error E-30, E-31 and E-32 is displayed.
Probable symptoms due to poor contact
• The stop switch is not activated.
• The thread breakage detection does not operate normally.
HE-800A