Canon PC980 Service Manual - Page 349
Variable Resistors VR and Check Pins by PCB, DC Controller PCB,
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CHAPTER 11 TROUBLESHOOTING F. Variable Resistors (VR) and Check Pins by PCB Of the variable resistors (VR) and check pins, those needed in the field are discussed herein. Those not found in the discussions are for the factory only, requiring special tools and adjustment to an extremely accuracy. Do not touch them in the field. Caution: VRs that may be used in the field VRs that must not be used in the field ......... 1. DC Controller PCB 21 8 1 9 1 19 1 51 3 J130 1 J101 2 J131 1 J114 JP102 JP101 VR104 J102 18 J111 2 VR106 VR105 CP23 6 J2012 6 J111 GND 1 7 VR107 JP104 JP103 J108 VR103 VR102 J107 J103 J104 J105 J109 J106 J132 J113 SW101 1 6 11 1 41 81 7 11 1 2 1 5 1 3 Figure 11-606 2. Composite Power Supply PCB J207 J201 2 1 21 1 2 VR001 J910 FU102 J205 1 4 1 6 J202 1 J203 8 1 J2047 J209 VR801 VR301 J302 J213 J212 Figure 11-607 11-84 COPYRIGHT © 1999 CANON INC. CANON PC800s/900s REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
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