
9 – Maintenance
DPN 402197 © TSS (International) Ltd Page 15 of 26
9.2.3 Coil Cable Continuity
Table 9–1 lists the pin-to-pin connections in the coil cables. You may use this informa-
tion to test the continuity of the cable during maintenance work.
The two cables are identical. Although you may interchange the coils, you must cou-
ple the vertical, lateral and fore-aft coils to their correct 8-way connectors on the
cable. Labels identify the cable tails.
Table 9–1: Connections to the coil cable
Sensing coil 8-way connector SEP 12-way connector
Description Pin No Pin No Description
G0 – Pre-amp gain control line 1 1 G0 – Pre-amp gain control line
G1 – Pre-amp gain control line 2 2 G1 – Pre-amp gain control line
Signal + (Lateral) 3 3 Lateral coil signal +
Signal –(Lateral) 4 4 Lateral coil signal –
Signal + (Fore-aft) 3 5 Fore-aft coil signal +
Signal –(Fore-aft) 4 6 Fore-aft coil signal –
Signal + (Vertical) 3 7 Vertical coil signal +
Signal –(Vertical) 4 8 Vertical coil signal –
+12V supply in 5 9 +12V supply out
–12V supply in 6 10 –12V supply out
Analogue ground 7 11 Analogue ground
12 Screen chassis
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