Lindos LA100 Application Notes

LA100 Application Note 32:
Fitting the LA100 Silver Upgrade (Linear PSU)
Note: Only fit this modification to LA101 or LA102 with a transformer (NOT a black
switch-mode power supply). These instructions apply to issue 4 and 5 LA100 top boards.
This kit is to be fitted by competent engineering personnel. If you have any queries,
contact Lindos for advice.
While fitting the kit, static electricity precautions should be observed.

Check kit contents:-

• 2 x Chassis
• 2 x Sets of single covers
• 2 x Rear panels
• 2 x Front panels
• 1 x Set of LA101 front and rear labels
• 1 x Set of LA102 front and rear labels
• 2 x Fuse holders

Fitting the upgrade:-

• Remove covers and place to one side.
• Unplug the cable forms and unscrew the circuit boards and place in a rack.
• Fit the switch to the LA101 bottom board, this is found on Iss.2 boards or above
only. This is marked S2 on some boards or with a centre ground/floating diagram on
others. Refer to photo below. Issue 3 and Issue 4 V2 require modifying.
LA101 Issue 3
• 2 x Fuse holder boots
• 2 x 1A fuses
• 2 x 150mm length of brown cable
• 1 x Switch
• 2 x D-type sub PCB connectors
• 2 x RS232 leads
• 2 x Cable ties
LA101 Issue 4 – V1
DO NOT MODIFY
Tel: +44 (0)1394 380307
Fax: +44 (0)1394 385156
E-mail: info@lindos.co.uk
Lindos Electronics, Saddlemakers Lane
Melton, Woodbridge, Suffolk, IP12 1PP, UK
LA101 Issue 4 – V2
Copyright Lindos Electronics