Which transistor drives which WPC solenoid and lamp circuits

TIP36c (PNP, crosses to NTE393) drives solenoids 1-8, and 29/31/33/35 on some games, plus the initial flipper pulse on Fliptronics. TIP102 (NPN, NTE2343) drives solenoids 9-28 (9-16 low power, 17-20 flashers, 21-28 general purpose), 30/32/34/36 on some games, the Fliptronics hold circuits and the lamp-matrix rows (switching ground). TIP107 (PNP, NTE2344) switches +18 V onto the lamp-matrix columns. 2N5401 or MPSD52 (equivalent, also NTE288) pre-drive the TIP102s; 2N4403 (NTE159) is the pre-driver on the Fliptronics and auxiliary driver boards.

Systems

• WPC Alpha-Numeric
• WPC Dot Matrix
• WPC Fliptronics
• WPC DCS
• WPC-Security (WPC-S)
• WPC-95

Related tips

• Where the WPC coil and lamp drivers sit
• A coil or flasher energizes as soon as the game is turned on
• How the WPC lamp matrix works
• How the WPC lamp matrix is switched
• WPC lamp matrix and GI driver parts
• The four groups of WPC coil outputs
• A lamp column or row stays on all the time
• A row or column of lamps stuck on and too bright

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Two, Clay Harrell (pinrepair.com)