SL-1200M3D I
• Operation Checks and Component Replacement Procedures
m l. This section describes procedures for checking the operation of the major printed circuit
boards and replacing the main components.
2. For reassembly after operation checks or replacement, reverse the respective procedures,
Special reassembly procedures are described only when required.
3. Select item from the following index when checks or replacement are required.
• Contents
• Checking Procedures for each P.C.B. Page.
l. Checking for the drivecontrolF_C,B.and power supplyP.C.B_ . .................... 12.
• Main Component Replacement Procedures
1. Replacementfor the drive coil ass'y and FG coilass'y. ......................... 13,
2. Replacementfor the tonearm unit. • ............................... 13-16.
3. Replacementfor the lamp and stylusilluminatorswitch. • ....................... 16.
4. Replacementfor the parts mountedonspeed selector P,C.B. and power switch.• ............. 16.
• Checking Procedures for each P.C.B,
1. Checking for the drive control P.C.B. and
Power supply P.C.B.
Remove the turntable mat and turntable ass'y.
t1"
Tonearm ass'y
1. The tonearm ass'y should be supported by arm rest.
2, Take care not to stick the dust or iron powder to the
magnet attached to back inner side of turn table.
Remove the panel
• Check the drive control P,C.B. and power
supply P.C.B, as shown below.
Powersupply P.C.B.
Drive control P.C.B
--12
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