Hi,

I am working on a TCM 4Series Old forklift. Problem is Zero Drive. Tech worked before messed up the wiring and logic board. Following the color codes we brought the wiring to original shape. now steering motor works through card, forward and reverse contactors meet upon gear selection but nothing from accelerator. There are voltages on accelerator, output voltage change if we press the pedal from 18 V to 16 Volt. I am bit confused in Thyristor unit wiring. If any anyone have a FVB20H4 series forklift operational, please contact me. Just need a control panel picture to verify the connections. or any help for wiring diagram.

Thanks Ahead.

Addy