YORKVILLE NX55P Service Schematics page 9
Hide thumbs
Also See for NX55P:
- Service manual (23 pages) ,
- Owner's manual (18 pages) ,
- Specifications (1 page)
Advertisement
PRODUCTION NOTES
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.
2.MAKE SURE TO RTV ALL LARGE CAPACITORS TO SOMETHING CLOSE
3. SLIDE EMI FILTER OVER RIBBON BEFORE INSERTING INTO P.C.B.
**************IMPORTANT******************
4. ADD AMPLE RTV UNDER ENTIRE BASE OF OUTPUT COIL L1
5. LEADS FOR 5 WATT RESISTORS MUST BE BENT ON THE MACHINE
LEAD LOOP MUST NOT BE ABOVE TOP OF RESISTOR
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!)
8. PC#7194:
a. AUTO INSERTION, DO NOT STUFF R129
b. BOARD ASSEMBLY, ADD R129 1K21 #6111. SEE ATTACHED PHOTO
9. CUT TRACE ON BOTTOM LAYER, SEE ATTACHED PHOTO
10. PC7435, RESTORE HORN LIMITTER, CHECK THE PRODUCTION NOTES
ON NEXT PAGE, PAGE 3. THIS IS ONLY FOR NORTH AMERCAN UNITS
11. PC7398, ADD CROWBAR CIRCUIT AND CHANGE THE FUSE VALUE
AT THE SAME TIME.
WITHOUT CROWBAR
N.A.
CE
XFRM
CH1254
CH1254E
CH1254
#2410
#2470
FUSE F1
F 4A
F 2A
12. M1309, PARTS REPLACEMENT TABLE
M1309
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.
5 WATT
WITH CROWBAR
N.A.
CE
CH1254E
#2410
#2482
F 4A
F3.15A
PHOTO 3
NOTE 9:
SEE LAYOUT DIAGRAM
M1309A
CE
C19
#5258, 4U7 63V 20%
R89
#6126, 220K 1/4W 5% MINI
R124
#4981, 1K 1/4W 5% MINI
R145
#4910, 4K3 1/4W 5%
R152
X - NO PART
R157
#4938, 3K3 1/4W 5%
D34
#6733, BAT85 30V 0A2
D43
#6733, BAT85 30V 0A2
U23
X - NO PART
U15
X - NO PART
X2
X - NO PART
W28
#4036, 8in 4C-28AWG RIB 1 W/LCK HDR
W5
#3514, 10in 6C-26AWG RIB 1 W/LCK HDR
PHOTO 1
U15
NSL-32SR2
U15
FREE PAD
FREE PAD
NOTE 11:
W5
W5
M1309B
N.AMERICA
#5281, 10U 16V 20% NP
#6122, 33K 1/4W 5% MINI
#4599, 22AWG SOLID JUMPER
#4814, 3K6 1/4W 5%
#6113, 2K 1/4W 5% MINI
#4940, 10K 1/4W 5%
#6825, 1N4148 75V 0A45
#6825, 1N4148 75V 0A45
#6858 OPTO-COUPLER
#6858 OPTO-COUPLER
#4599, 22AWG SOLID JUMPER
X - NO PART
X - NO PART
PHOTO 2
U23
NSL-32SR2
U23
W28
W28
FREE PAD
FREE PAD
PHOTO 4
NOTE 8:
Advertisement
