5
CONTENTS
SAFETY INFORMATION .....................................................................................................................................2
1. SERVICE PRECAUTIONS................................................................................................................................4
1.1 SAFETY PRECAUTIONS ...........................................................................................................................4
1.3 NOTES ON REPLACING PARTS ...............................................................................................................4
1.4 NOTES ON ADJUSTMENT ........................................................................................................................4
1.5 OTHERS.....................................................................................................................................................4
2. SPECIFICATIONS.............................................................................................................................................5
2.1 SPECIFICATIONS ......................................................................................................................................5
2.2 DISC/CONTENT FORMAT .........................................................................................................................5
3. BASIC ITEMS FOR SERVICE ..........................................................................................................................5
4. BLOCK DIAGRAM ............................................................................................................................................6
4.1 BLOCK DIAGRAM......................................................................................................................................6
4.2 POWER BLOCK DIAGRAM .......................................................................................................................7
5. DIAGNOSIS ......................................................................................................................................................8
5.1 OPERATIONAL FLOWCHART ...................................................................................................................8
5.2 ERROR CODE LIST...................................................................................................................................9
5.4 FUSE CHECK...........................................................................................................................................12
6. SERVICE MODE.............................................................................................................................................13
6.1 DISPLAY TEST MODE 1 ..........................................................................................................................13
6.2 DISPLAY TEST MODE 2 ..........................................................................................................................14
7. DISASSEMBLY ...............................................................................................................................................16
8.1 PCL OUTPUT CONFIRMATION...............................................................................................................18
9.1 PACKING ..................................................................................................................................................19
9.2 EXTERIOR ...............................................................................................................................................21
10. SCHEMATIC DIAGRAM................................................................................................................................23
10.12 KEYBOARD UNIT ................................................................................................................................34
11. PCB CONNECTION DIAGRAM ....................................................................................................................35
11.1 TUNER AMP UNIT .................................................................................................................................35
11.2 KEYBOARD UNIT ..................................................................................................................................37
12. ELECTRICAL PARTS LIST ...........................................................................................................................39
5
6
MVH-280FD/XNEW5
6
7
7
8
A
B
C
D
E
F
3
8