Technics SX-KN7000P

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7.5. Removing the ACP printed circuit board

ACP P.C.B.

1. Remove the ACP cover mounting screws ( 3pcs.) as shown in Fig.9 .

2. Remove the ACP P.C.B.and insuration sheet mounting screw ( pc.) as shown in

Fig.9 .

Fig.9

Main Page

Specifications2
Performance Pads4
Auto Play Chord4
Safety Precaution8
Insulation Resistance Test9
Owners Manual9
MIDI Implementation Chart10
Keyboard Ranges10
Parts Location10
Disassembly Instructions11
Removing the Top Cabinet11
Net Panel and Keyboard Unit13
Control Panel13
Power SW Panel13
SD Panel13
Keyboard Unit14
Removing the JACK and MAIN Printed Circuit Boards14
Jack P.C.b.14
Main P.C.b.15
Removing the FAJ Printed Circuit Board16
Faj P.C.b.16
ASUB P.C.B. Disasemble17
ASUB P.C.B. Asemble17
Removing the ACP Printed Circuit Board18
Acp P.C.b.18
Pcs.) as Shown in Fig18
Lcd20
Cpl P.C.b.20
Cpr P.C.b.20
ROT P.C.B. , CPC P.C.B. and INV P.C.B20
Removing the SD and SDSW Printed Circuit Boards21
Removing the BEND and the HP P.C.B.22
Removing the Disk Drive Unit23
Removing the Power SW24
Removing the 14Cm SP, 12Cm SP and 6.5Cm SP25
Removing the Keys26
Service Diagnostic Function27
To Set to the Service Diagnostic Mode27
ROM Device Test28
RAM Device Test29
Floppy Disk SAVE/LOAD Test30
Panel SW & LED Test31
In & out Interface Test32
Rgbwb32
Crosstalk32
Sample32
MIDI IN/OUT Test33
WAVE ROM Test34
SOUND SYSTEM Test34
WAVE EXPANSION BOARD Test36
Precautions before Servicing the Main Circuit37
About the FLASH ROM37
Notes on Replacing FLASH Roms38
Block Diagram38
Data Bus38
About the Replacement Parts39
How to Write Program/Data into FLASH Roms39
After Replacing the PROGRAM ROM39
After Replacing the CUSTOM DATA ROM40
Measurements and Adjustments41
Precautions before Servicing41
Precautions for Measuring of the Output Waveforms41
Important Safety Notice41
Capacitors42
Specification42
Measuring Condition43
Printed Circuit Board and Schematic Diagram44
Reset44
Schematic Diagram45
Printed Circuit Board46
Wiring Connection Diagram46
Replacement Parts List46
Block Diagram46
Cabinet Parts Location76
Packaging77
Schematic Diagram for Printing with A477
Controls and Functions90
Music Stylist90
Rhythm Group90
Pitch Bend/Modulation90
Initialize92
Initial92
Select CONTROL92
About the Backup Memory and Performance Data93
Separately Sold Options93
Terminals94
Back Panel Terminals94
Video out94
MIDI94
Exp Pedal94
Foot Controller94
MIC95
Line in95
Aux in95
Sub out95
Symptoms Which Appear to be Signs of Trouble96
Error Messages98
Schematic Diagram100
Cpl Circuit128
Cpc Circuit130
Cpr Circuit132
Jack Circuit134
Bend/Mod Circuit135
Inv Circuit135
Mkb1 Circuit136
Sd I/F Circuit138
Sd Play Sw/Vol Circuit139
Hp Circuit139

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