hifi engine

Sansui CA-F1

Hi all I've a sansui CA-F1 pre-amp of which I've repaired, had a fault in the head amp section,power supply, has anyone got a complete service manual as I need to set up the bias controls in the head amp section
the circuit ref No's are VR01 and VR02

your assistance will be appreciated

Regards JR


The two trimmers VR01 and VR02 must be regulated in order to have a "0" offset voltage at point between R82 and R84 and R81-R83 respectively for left and right channels.
The same for trimmers on line amp, checking for a "0" offset voltage between R61-R63 and R62-R64.