Board Assembly - YORKVILLE U15P Service Manual

PRODUCTION NOTES

Board Assembly

1 - INSERT #8829 THROUGH THE TWO TOOLING HOLES ON THE HEATSPREADER
2 - INSERT #8741 THROUGH THE FOUR CORNERS OF THE HEATSINK AND ADD
#8701 NUTS ON PCB SIDE
3 - MOUNT Q12,Q13,Q26,Q27 SCREWS FROM THE TOP
4 - BOARD ASSEMBLY: INSERT Q36 #6467 10K THERMISTOR BY HAND
5 - FILL SPACE BETWEEN HEATSPREADER AND Q7 AND Q36 WITH THERMAL GOOP
GOOP
HEAT SPREADER
Q7
PCB
6 - SHOOT FOUR #8786 SCREWS FROM THE BOTTOM OF THE PCB. AFTER THE
TRANSISTORS AND CLIPS HAVE BEEN ADDED, USE #8841 NUTS TO HOLD IT
ALL TOGETHER.
7 - CONNECT BREAK-AWAY BOARD TO UNDERSIDE OF MAIN BOARD USING
THREE #3668 CONNECTORS AFTER DROPPING BOARD INTO CHASSIS
8 - RTV LARGE ELECTROLYTIC CAPACITORS TOGETHER, RTV SMALL
ELECTROLYTICS TO THE BOARD
9 - TAPE OFF GROUND RING NEAR SUPPLY CAPS BEFORE WAVE SOLDERING.
THIS AREA MUST BE FLAT WHEN ASSEMBLING CHASSIS.
10 - FOR FAN CONNECTORS (W9, W10 AND W11) CHECK WITH PENG
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SEE LAYOUT DIAGRAM
M1234 U15P
For two .081" heatsinks
2 of 8761
TO3 device
2 of 8608
3916
Inner heatsink
Outer heatsink
PCB
2 of 8760