YORKVILLE AP2020 Service Manual page 9

M1130 PRODUCTION NOTES
1. MOUNTING DETAILS FOR 5W ADD #8629 SPACERS ONLY ON
5 WATT RESISTORS R46 AND R69.
2. MOUNTING HARDWARE FOR Q9 AND Q10.
#3797 THERMO PAD
HEATSPREADER
PCB
#8701 4-40 KEPS NUT
3. MOUNTING HARDWARE FOR Q38 AND Q39.
#3823 THERMO PAD
HEATSPREADER
#8701 4-40 KEPS NUT
4. MOUNTING HARDWARE FOR Q15 AND Q16.
#8667 SHOULDER WASHER
#3846 MICA
HEATSPREADER
SEE LAYOUT DIAGRAM
#8871 4-40X 1/2" BOLT
#3501 BELL WASHER
T264 DEVICE
TORQUE 4 INCH/LB
#8741 4-40X 1/2" BOLT
#3501 BELL WASHER
PCB
TORQUE 4 INCH/LB
#8741 4-40X 1/2" BOLT
#3501 BELL WASHER
T-220 DEVICE
PCB
#8701 4-40 KEPS NUT
TORQUE 4 INCH/LB
5. MOUNTING HARDWARE FOR TO3 OUTPUTS
6. MOUNTING HARDWARE FOR Q28 AND Q37.
#8701 4-40 HEX NUT
T126 TYPE DEVICE
7. TAB WIRE COLOURS:
8. Q37 IS HAND INSERTED AND BENT OVER WITH FLAT SIDE
UP AS SHOWN.
9. Q1 AND Q4 ARE HAND INSERTED.
#8663 SPACER
INITIAL TORQUE FOR TO-3'S IS 8 INCH/LB
FINAL TORQUE AFTER HEATSINK HAS
COOLED FROM WAVE SOLDER IS 6 INCH/LB
#3896 HEATSINK
#3501
WASHER
#8865 4-40 SCREW
TAB 1 RED 16AWG TAB 2 YEL 16AWG
TAB 4 WHT 16AWG TAB 5 BLU 16AWG
TAB 6 OUTPUT + TAB 7 OUTPUT -
#8835 BOLT
TO-3 TRANSISTOR
#3915 MICA
MICA GREASE IS REQUIRED ON
BOTH SIDES OF THE MICA PAD
HEATSPREADER
#8800 6-32 KEPS NUT