Yamaha Tyros 3 Service Manual
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11 Tyros3 1. Separation of Upper Case Unit and Lower Case Unit.......................................................................12 2. DM Circuit Board ..................................................................................................................................13 3. DJK Circuit Board ................................................................................................................................14 4. AC Upper Frame Assembly...
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Tyros3 12 1. Separation of Upper Case Unit and Lower Case Unit (The required: About 5 minutes). 1-1 Remove the four (4) screws marked [S12] and seventeen (17) screws marked [S14A], lift the rear side of the upper case unit a little, pull it toward you a little paying attention not to damage connector assemblies, and lift the upper case unit carefully. (Fig. 1, Photo 1) 1-2 Remove the six (6) screws marked [S03A]. The ACDM earth angle can then be removed. (Fig. 2) 1-3 Remove the screw marked...
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13 Tyros3 Press the ejector levers until the DIMM unlocks.Pull the DIMM vertically out of the socket. LOWER CASE UNIT DM COVERACDM EARTH ANGLEAC UPPER FRAME ASSEMBLY [S09][S01A] • Top View [S01A] [S01B][S03A] [S03C] [S03A] 2. DM Circuit Board (Time Required: About 8 minutes) * If there is a DIMM inserted into the DIMM socket, remove the four (4) screws marked [S02A], DIMM cover and the DIMM before going to the procedures below. (Fig1, Fig. 3) 2-1 Separate the upper case unit and lower case...
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Tyros3 14 3. DJK Circuit Board (Time Required: About 10 minutes) 3-1 Separate the upper case unit and lower case unit. (See procedure 1.) 3-2 Remove the DM circuit board. (See procedure 2.) 3-3 Remove the three (3) screws marked [S03B], eight (8) screws marked [S04A] and two (2) hexagonal lock screws marked [S21]. The DJK circuit board can then be removed. (Fig. 5) 4. AC Upper Frame Assembly (Time Required: about 6 minutes) 4-1 Separate the upper case unit and lower case unit....
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15 Tyros3 7. AJK Circuit Board (Time Required: About 8 minutes) 7-1 Separate the upper case unit and lower case unit. (See procedure 1.) 7-2 Remove the AC upper frame assembly. (See procedure 4.) 7-3 Remove the AC lower frame assembly with the power supply unit on it (See procedure 6.) 7-4 Remove the VR knob (LINE IN/MIC [TRIM]). (Fig. 5) 7-5 Remove the four (4) screws marked [S03F] and six (6) screws marked [S04B]. The AJK circuit board can then be removed. (Fig. 5) 8. ACIN Wiring...
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Tyros3 16 ENCODER KNOB 13. PNL Circuit Board (Time Required: About 10 minutes) 13-1 Remove the slider knob (ASSIGN) from the control panel. (Fig. 1) 13-2 Separate the upper case unit and lower case unit. (See procedure 1.) 13-3 Remove the four (4) screws marked [S05A]. The two (2) panel stays A can then be removed. (Fig. 6) 13-4 Remove the twenty-two (22) screws marked [S05B]. The PNL circuit board can then be removed. (Fig. 6) 14. EN Circuit Board (Time Required: About 6 minutes)...
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17 Tyros3 17. PNLS Circuit Board (Time Required: About 6 minutes) 17-1 Separate the upper case unit and lower case unit. (See procedure 1.) 17-2 Remove the four (4) screws marked [S05K]. The PNLS circuit board can then be removed. (Fig. 6) 18. MICVR Circuit Board (Time Required: About 6 minutes) 18-1 Remove the VR knob (INPUT VOLUME) and the MASTER VOLUME knob from the control panel. (Fig. 1) 18-2 Separate the upper case unit and lower case unit. (See procedure 1.) 18-3 Remove...
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Tyros3 18 22. LCD Lower Assembly and Gear (Time Required: About 7 minutes) 22-1 Separate the upper case unit and lower case unit. (See procedure 1.) 22-2 Remove the LCD unit. (See procedure 21.) 22-3 Remove the eight (8) screws marked [S04E], slide the LCD hook and remove the LCD lower assembly and gear while shifting the hook at the back of the LCD unit as shown in Photo 4. (Fig. 14, Photo 4) 23. LCL Circuit Board (Time Required: About 7 minutes) 23-1 Separate the upper case unit...
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19 Tyros3 LOWER CASE UNIT DATA LINE FILTERMK UNIT • Top View [S07A][S05P][S05P] [18] [S05P][S05P] DATA LINE FILTER FLAT CABLE[S07A] [S03J] CN2LCD UPPER CASELCL LCR [S03K] CN2CN2 JH [S03]: BIND HEAD TAPPING SCREW-B 3.0X8 MFZN2W3 (WE774301) [S03L]A A LCD UPPER CASECRYSTAL DISPLAY JH [S03L]: BIND HEAD TAPPING SCREW-B 3.0X8 MFZN2W3 (WE774301) 25. Crystal Display (Time Required: About 7 minutes) 25-1 Separate the upper case unit and lower case unit. (See procedure 1.) 25-2 Remove...
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Tyros3 20 27. Keys (White and Black Keys) 27-1 Remove the keyboard assembly. (See procedure 26.) 27-2 Remove the key stoppers corresponding to the keys to be replaced. (Table 1, Fig. 19) 27-3 White key 27-3-1 Place the white key in the horizontal position and remove it, lifting while pushing rearward. (Photo 6) * At this time, a key guide cap may come off together. (Photo 8) 27-4 Black key 27-4-1 Remove the white keys on the right and left sides of the black key to be removed. (Photo...