Location of the internal printed circuit boards:
system control pcb (2221)
peak level pcb (5202)
LR
backside
playback amp pcb (5017)osc & rec amp pcb (5016)
servo control pcb(2036)
power supply pcb (2222)
Common problems, service, revise, overhaul, refurbish actions etc:
□ Replace all caps on REC & PB boards, see pg. 3 & 4
□ Replace all transistors on REC & PB boards with KSC1845, see pg. 3 & 4
□ clean both speed switches
□ replace all sparkkillers on power supply pcb, and 1 between reels on front
□ TIP48 transistor replace with TIP50
□ (replace 4 diodes on servoboard with FR207 (1000V / 2A) )
□ (replace 8 diodes on power supply board with FR207 (1000V / 2A) )
□ motor caps 5µF/150V capstanmotor + 2x 4µF/250V spoolmotor. could be replaced if necessary
□ big 330µF/160V high ripple cap could be replaced
All specs are for the CEE 220/240V version
TIP48
330µF/160V
5µF/150V
capstan
4µF 2x
spool motors
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