Everything in the manual was excellent except for a couple of pictures of specific areas in the unit that were a little dark. Owners Manuals re-sent the pdf file & the problem was corrected. Excellent product! George
This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
This is a high quality manual with clear schematic and components layout diagrams ; with service procedure included.
Text excerpt from page 47 (click to view)
2-3. BKNE-1011 2-3-3. Installation and Removal of Boards
2. LD-77 Board (1) Remove the fader grip, the four knobs and the five slide knobs. (Refer to the steps 1 and 2 of the section 2-3-1.) (2) Remove the upper panel assembly. (Refer to the step 3 of the section 2-3-1.) (3) Disconnect the two connectors (CN7 and CN8) on the CPU-207 board. (Refer to the step 4 of the section 2-3-1.) (4) Remove the four screws and the VR fitting bracket. (Refer to the step 6 of the section 2-3-1.) (5) Disconnect the flexible card wire (CN1) on the LD-77 board.
3. SW-871 Board (1) Remove the fader grip, the four knobs and the five slide knobs. (Refer to the steps 1 and 2 of the section 2-3-1.) (2) Remove the upper panel assembly. (Refer to the step 3 of the section 2-3-1.) (3) Disconnect the two connectors (CN7 and CN8) on the CPU-207 board. (Refer to the step 4 of the section 23-1.) (4) Remove the two screws and the ENC bracket. (Refer to the step 5 of the section 2-3-1.) (5) Remove the two screws and disconnect the five connectors (CN1 through CN5). Remove the SW-871 board.
SW-871 board
CN2 CN3 CN1
LD-77 board CN1 Flexible card wire
CN4 CN5
ENC bracket
PSW 3x4
(6) Remove the three screws and the LD-77 board.
B 2.6x4
(6) Install the SW-871 board in the reverse order of the steps (1) through (5).
LD-77 board VR fitting bracket
(7) Install the LD-77 board in the reverse order of the steps (1) through (6).
