YORKVILLE NX55P, Service Schematics

Page: 9 / 21

5 WATT
NSL-32SR2
#3790
PHOTO 4
NOTE 8:
FUSE F1
XFRM CH1254 CH1254E CH1254 CH1254E
11. PC7398, ADD CROWBAR CIRCUIT AND CHANGE THE FUSE VALUE
AT THE SAME TIME.
10. PC7435, RESTORE HORN LIMITTER, CHECK THE PRODUCTION NOTES
ON NEXT PAGE, PAGE 3. THIS IS ONLY FOR NORTH AMERCAN UNITS
9. CUT TRACE ON BOTTOM LAYER, SEE ATTACHED PHOTO
**************IMPORTANT******************
NSL-32SR2
#2410 #2470 #2410 #2482
F 4A F 2A F 4A F3.15A
WITHOUT CROWBAR WITH CROWBAR
N.A. CE N.A. CE
8. PC#7194:
a. AUTO INSERTION, DO NOT STUFF R129
b. BOARD ASSEMBLY, ADD R129 1K21 #6111. SEE ATTACHED PHOTO
6. FIT #8921 FLAT WASHER BETWEEN #3501 BELL WASHER AND #8667 SHOULDER
WASHER FOR Q2, Q10, U30 AND U31
7. PCBSA: ENSURE THAT #5862 CAP LEADS ARE PROPERLY INSERTED
(DO NOT PUT LEADS INTO RTV HOLES!)
5. LEADS FOR 5 WATT RESISTORS MUST BE BENT ON THE MACHINE
LEAD LOOP MUST NOT BE ABOVE TOP OF RESISTOR
3. SLIDE EMI FILTER OVER RIBBON BEFORE INSERTING INTO P.C.B.
4. ADD AMPLE RTV UNDER ENTIRE BASE OF OUTPUT COIL L1
2.MAKE SURE TO RTV ALL LARGE CAPACITORS TO SOMETHING CLOSE
#3535
PRODUCTION NOTES M1309
NOTE 11:
1. NOTE THAT THERE ARE SEVERAL LINES ON THE DSBOTMASK LAYER.
THESE MAY BE USED FOR MARCONI TEST POINTS SO HAVE THIS LAYER
ON IF DOING ANY MODIFICATIONS.
SEE LAYOUT DIAGRAM
12. M1309, PARTS REPLACEMENT TABLE
PHOTO 3
NOTE 9:
13. M1309B, U15 AND U23 ARE HAND INSERTED
BEFORE WAVE SOLDERING, PUT THE JUMPERS FIRST
THEN CUT THE JUMPERS AND PUT OPTOCOUPLERS
AND CONNECT THEM AS SHOWN IN THE PHOTOS.
PHOTO 1 U15 PHOTO 2 U23
W5
W5
W28
U23
FREE PAD
FREE PAD
U15
FREE PAD
FREE PAD
W28
M1309A M1309B
CE N.AMERICA
C19 #5258, 4U7 63V 20% #5281, 10U 16V 20% NP
R89 #6126, 220K 1/4W 5% MINI #6122, 33K 1/4W 5% MINI
R124 #4981, 1K 1/4W 5% MINI #4599, 22AWG SOLID JUMPER
R145 #4910, 4K3 1/4W 5% #4814, 3K6 1/4W 5%
R152 X - NO PART #6113, 2K 1/4W 5% MINI
R157 #4938, 3K3 1/4W 5% #4940, 10K 1/4W 5%
D34 #6733, BAT85 30V 0A2 #6825, 1N4148 75V 0A45
D43 #6733, BAT85 30V 0A2 #6825, 1N4148 75V 0A45
U23 X - NO PART #6858 OPTO-COUPLER
U15 X - NO PART #6858 OPTO-COUPLER
X2 X - NO PART #4599, 22AWG SOLID JUMPER
W28 #4036, 8in 4C-28AWG RIB 1 W/LCK HDR X - NO PART
W5 #3514, 10in 6C-26AWG RIB 1 W/LCK HDR X - NO PART