Technics SX-PX554, Service Manual

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Digital Piano 1
SPECIFICATIONS 1
1. WARNING 3
2. SAFETY PRECAUTION 3
2.1. Safety precaution 3
2.2. Insulation resistance test 4
3. OWNERS MANUAL 4
4. HOW TO ASSEMBLE THE PIANO 4
5. KEYBOARD RANGES 6
6. PARTS LOCATION 7
7. DISASSEMBLY INSTRUCTIONS 7
7.1. Removing the top cover 7
7.2. Removing the keyboard cover 7
7.3. Removing the control panel 8
7.4. Removing the keyboard assembly 8
7.5. Key(s) 9
7.6. Disassembly of the pedal assembly 10
7.7. Removing the speakers 10
7.8. Removing the printed circuit boards 11
8. SELF-DIAGNOSTIC FUNCTIONS 12
9. PRECAUTIONS BEFORE SERVICING 14
9.1. Precautions for measuring of the output waveforms 14
9.2. Important safety notice 15
9.3. Symbolic marks 15
9.3.1. Resistors 15
Table-1 15
9.3.2. Capacitors 16
Table-2 16
10. MEASURING CONDITION 16
10.1. Measuring condition of MAIN P.C.B. 17
10.2. Measuring condition of FAJSP P.C.B. 17
11. SCHEMATIC DIAGRAM 18
12. PRINTED CIRCUIT BOARD 18
12.1. MAIN, FAJSP, CPL P.C.B. 18
12.2. CPR, MKB1, MKB2, PKB, COM, HP P.C.B. 18
13. BLOCK DIAGRAM 18
14. WIRING CONNECTION DIAGRAM 18
15. REPLACEMENT PARTS LIST 18
16. CABINET PARTS LOCATION 37
17. PACKAGING 40
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