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2.2 How to Adjust the Drive Belt (or Pulley Belt) Tension
1) Loosen two HEX LOCK NUTs (11) a little
using 17mm spanner.
2) To increase the tension, turn HEX NUT
(21) clockwise with a 19mm spanner while
holding H/S HEX BOLT (12) with another
19mm spanner. Initial tension is set to 190
Hz. To decrease the tension, turn HEX NUT
(21) counterclockwise.
3) Make sure that PULLEY BELT does not
slip and then install the REAR COVER-C,
REAR COVER-R and REAR COVER-L in
reverse order.
2.3 How to Replace the Drive Belt (or Pulley Belt)
1) Loosen two HEX LOCK NUTs
(11) a little using 17mm spanner.
2) To loosen the PULLEY BELT
(22), turn HEX NUT (21)
counterclockwise with a 19mm
spanner while holding H/S HEX
BOLT (12) with another 19mm
spanner. See “2.2 How to Adjust the
Drive Belt (or Pulley Belt) Tension”
3) Derail the slackened PULLEY
BELT (22) from the PULLEY (19).
4) Remove CAP HEX NUT (163) and PLANE WASHER (49) using 24 mm spanner.
5) Pull COUPLER FRAME (42) out of CRANK ASS’Y-230 (39) by lifting it off.
6) Remove H/S HEX BOLT (41) and HEX LOCK NUT (13) using 21 mm Spanner and then slide
CRANK ASS’Y-230 (39) off the Shaft of the Pulley (19).
7) Remove SQUARE KEY (161) from the Shaft.
8) Remove four H/S HEX BOLTs (25) using 17 mm spanner and then slide the BEARING-
UCF206 (23) off the Frame and Shaft of the Pulley (19).
9) To remove the CRANK ASS’Y-230 and BEARING-UCF206 in opposite side, repeat the same
Summary of Contents for M770E
Page 24: ...23 3 1 How to Replace the LCD Screen in Model M770EL Fig 3a CONSOLE POST ...
Page 25: ...24 Fig 3b CONSOLE ...
Page 33: ...32 7 Install new AUDIO INTERFACE DOWNLOAD Board 24 in reverse order ...
Page 40: ...39 4 1 Cable Connection Block Diagram 1 MPU PCB on M770EL MPU_FRONT Display MPU_BACK MAIN ...
Page 41: ...40 2 MPU PCB on M770E ...
Page 42: ...41 3 A D BOARD on M770EL ...
Page 43: ...42 4 POWER BOARD 4 1 M770EL DRIVE Board SMPS 5V LCD POWER ADAPTER 4 2 M770E DRIVE Board ...
Page 60: ...59 RCA 6A YELLOW Video Input ...
Page 69: ...68 ...