Brother HE-800A Service Manual page 140

6. ELECTRIC COMPONENTS AND SOFTWARE
2. Circuit board connectors [Sub circuit board]
P1 [EXP1]
Pin no.
1 +5V
2 +5V
3 +5V
4 +5V
5 +24V
6 +24V
7 +24V
8 +24V
9 Feed PM clock
10 Work clamp PM clock
11 -
12 -
13 Work clamp PM direction signal
14 Feed PM direction signal
Work clamp PM current control
15
signal
16 Feed PM current control signal
17 PM current OFF signal
18 -
19 -
20 -
21 VALV1
22 VALV2
23 VALV3
24 VALV4
25 VALV5
26 VALV6
27 +55V OFF signal
28 +55V relay output signal
29 0V
30 0V
31 0V
32 0V
P2 [FDPM]
Pin no.
1 Feed PM driving current A
2 Feed PM driving current B
3 Feed PM driving current C
4 Feed PM driving current D
5 Feed PM driving current F
P3 [PER]
Pin no.
1 Relay input signal
2 0V
3 +55V relay output signal
4 +55V OFF signal
5 0V
132
Signal name
Signal name
Signal name
Probable symptoms due to poor contact
• The feed home position and work clamp home position can
not be found.
• The feed mechanism and work clamp mechanism do not
operate.
• One of error E-06 and E-07 is displayed.
• +55 V (power supply for driving the feed mechanism and
work clamp PM) control is not possible.
• Error E-44 is displayed.
• The valve does not operate.
Probable symptoms due to poor contact
• The feed home position can not be found.
• The feed mechanism does not operate.
• Error E-06 is displayed.
Probable symptoms due to poor contact
• The feed home position and work clamp home position can
not be found.
• The feed mechanism and work clamp mechanism do not
operate.
• One of error E-06 and E-07 is displayed.
• +55 V (power supply for driving the feed mechanism and
work clamp PM) control is not possible.
• Error E-44 is displayed.
HE-800A