Parts usually replaced in the CPU battery corrosion area
Crystal Y1 (3.579545 MHz); Z1 4528, Z2 7474 (74HCT74 suggested), Z3 7404, Z4 4081 and Z36 4069, with sockets; DIP switch SW1; C1 100 uF, C2 and C5 0.01 uF, C3 and C25 0.1 uF, C36 10 uF tantalum; diodes CR1-CR8 and CR33-CR35 1N4148; Q1 and Q4 2N4403 or 2N3906 (for MPSA70), Q2 and Q3 2N4401 or 2N3904 (for 2N4400); zener VR1 1N5225B (3.0 V).
Systems
Related tips
- Where the battery-area parts sit on the System 80 CPU board
- Clean up battery corrosion on a System 80 CPU board
- Parts typically ruined by battery leakage on a System 80 CPU board
- Remove the original DataSentry battery from every System 80 CPU board
- Fit a remote AA battery pack to a System 80 CPU board
- Orientation and static care when rebuilding the battery area
- Using a memory back-up capacitor instead of a battery
- Battery or memory cap won't hold settings
Source: Gottlieb System 80 Battery Corrosion Repair Components Kit