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GENERAL ASSEMBLY INSTRUCTIONS
1. Bend leads on hand placed parts in direction of pad and cut short to less than length of pad.
No exceptions unless approved by Production Engineering.
2. Any clinch parts with longer leads than the length of the pad must be cut shorter either prior to
wave-soldering or afterwards in PCB finishing. No exceptions unless approved by Production
Engineering.
3. After Wave apply RTV to all holes indicated and all larger and between tall capacitors.
4. Use jig shown to help stabilize the pcb so that it is easier to mount the 4249 clip with the self
tapping screw.
5. Before tightening screw 8832 on xstr spring 4249 ensure that it is aligned with Q4.
Also silpad 4124 should overhang the edge of the heatsink. See picture below.
MOUNTING HARDWARE INSTRUCTIONS FOR HEAT SPREADER Z1740:
1. First install #8742 screw to align heatspreader Z1740
2. Install all devices, shown in pictures below, on Heat Spreader
TOP VIEW:
MOUNTING HARDWARE FOR Q203/Q205:
Q203
Q205
ADD GOOP ON BOTH SIDES OF CERAMIC INSULATORS
1st HEATSINK ALIGNMENT SCREW
YS#: 8742
DESC: #4-40X3/8
PCB ASSEMBLY DOCUMENTATION
YS#: 8835
DESC: #6-32X1/2"
~ 2 PLACES
YS#: 8800
DESC: #6 KEPS NUT
~ 2 PLACES
YS#: 8902
DESC: 4-40X3/4 PAN
YS#: 8485
DESC: #6 ZINC WASHER
YS#: 4233
DESC: CERAMIC INSULATOR
IMPORTANT!
BOTTOM VIEW:
Use jig shown to hold pcb to aid in inserting mtg clip screw
YS#: 8832
DESC: 6-32X1/4 PAN TAPTITE
USE JIG SHOWN ABOVE
YS#: 4249
DESC: XSTR SPRING
Q4
YS#: Z1740
OVERHANG SILPAD
DESC: HEAT SPREADER
YS#: 4124
DESC: 1.1x0.82" SIL PAD
SEE NOTE 4.
YS#: 8701
DESC: 4-40 KEPS NUT
RTV INSTRUCTIONS:
ADD RTV BETWEEN AND AROUND BASE OF CAPS
C12, C13, C14, AND C15 AFTER WAVE SOLDER
ADD RTV
Top of Coil L200
Ensure that all fastener nubs on tie wraps
are well below the top of the coil.
Assembly Documentation
Section:
SA218S
Product(s):
M2333
V01
T. Wood
2
PCB#:
Rev#:
Eng:
Sheet
Of
Modified:
2023-08-16
File:
Assembly.SchDoc
3
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