Marshall 3540 Bass head schematic needed

[redneckgeek]

Just had a Marshall 3540 400 watt bass system head come in with week signal. Need a schematic!? Thank you please.

[vintagekiki]

This bass head was in production from 1984 upto 1993.
http://www.schematicheaven.com/marsh..._200w_3520.pdf
http://www.drtube.com/schematics/marshall/3520pre.gif
http://www.drtube.com/schematics/marshall/3520pwr.gif

This bass head was in production from 1987 upto 1993
http://www.drtube.com/schematics/marshall/3530pre.gif
http://www.drtube.com/schematics/marshall/3530psu.gif

This bass head was in production from 1987 upto 1993.
http://www.schematicheaven.com/marsh..._600w_3560.pdf
http://www.drtube.com/schematics/marshall/3560pwr.gif
http://www.drtube.com/schematics/marshall/3560psu.gif
http://www.drtube.com/schematics/marshall/3560xover.gif

User manual for the IBS amps (3510, 3520, 3540)
http://www.drtube.com/schematics/marshall/ibs.pdf