Marshall Schematics:

1959SLP preamp 1959SLP power & psu 1959 std preamp 1959 std power & psu 1962 valve trem combo reissue 1987X preamp 1987X power & psu 1987 std preamp 1987 std power & psu 2100SL-X preamp 2100SL-X power 2100SL-X power (cont'd) w/EL34 2100SL-X power (cont'd) w/5881 2203 preamp 2203 power & psu 2204 preamp 2204 power & psu 2205 preamp 2205 power & psu 2210 preamp 2210 power & psu 2500SL-X preamp 2500SL-X power Mesa-Boogie Dual Rectifier

2500SL-X power (cont'd) w/EL34
2500SL-X power (cont'd) w/5881
2550, 2553, 2558 amp (std and Jubilee)
2550, 2553, 2554, 2558,  serial# 3100 and up
2550 Power Supply
2554 amp (std and Jubilee)
2555 amp (std and Jubilee)
2555 psu (std and Jubilee)
4001 amp
4010 preamp
4010 output & psu
4100 complete (3 schematics)
4500 complete (3 schematics)
JCM2000 (complete - 5 schematics)
JTM30 preamp
JTM30 power & psu
JTM45 amp
JTM60 preamp
JTM60 power
JTM60 mains & output