YORKVILLE EXM 70, Service Manual, Page: 75 / 79

Assembly Documentation
Section:
Product(s):
Assembly.SchDoc
X8039 17 10 Sheet Of PCB#: Rev#:
Modified:
V05
File: 2022-04-08
EXMmobile
R.Himbeault Eng:
THIS SHEET CONTAINS SPECIAL PRODUCTION NOTES AND A LIST OF PCB HARDWARE PARTS REQUIRED FOR THE BUILD.
NUTS AND BOLTS
PCB HARDWARE
SPECIAL PRODUCTION NOTES
PCB ASSEMBLY DOCUMENTATION
Heatsink Assembly (PCB Finishing)
Apply Permabond to the end of each screw.
8741 8741
Z1891
HS1
-V_PWR
4236
HW1
HEATSINK AND GAP PAD
OUT
14
8
9
+
-
M1941:4
DNS
OUT
1
6
7
+
-
M1919:1
OUT
2
4
5
+
-
M1913:2
OUT
2
4
5
+
-
M1912:2
OUT
13
10
11
+
- M1940:3
DNS
XMmobile
M1939
2R4
1206
W250
BM1
2R4
1206
W250
BM2
DNS
2R4
1206
W250
BM3
DNS
The input section needs to
be air tight. All vias and
part holes must be filled
with solder.
1) Place both YS#8741 screws through the heatink
and secure with two YS#8793 nuts.
Tighten to 4 in. lbs.
2) Add YS#4236 gappad to U8. Handle the gappad
edges only, ensure the pad is centered over U8.
3) Place heatsink assembly from step 1 through the
PCB and on top of the gappad. Hold in place from
the centre with the clip.
4) Flip over the PCB and apply Permabond MM115
Threadlocker to each screw. Secure heatsink to PCB
with two YS#8701 nuts.
Tighten to 4 in. lbs.
8793
8793
8701
8701