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ÿþREV # DATE REVISION +12 NOTES: ALARM DISABLE J2 TEST/ALARM DISABLE RETURN 7 7/17/91 ECO #391 AND ECO #394 1) ALL DIODES 1N4148 R44 R138 WAS 33K IS NOW 24.9K, C44 WAS .1uF IS NOW .22uF 715-0007 3 J2 100K TO MAKE CURRENT LIMIT CIRCUIT WORK WITH STABLE +12. +12 14 8 IC5 10 8,9 8/30/91 ECO #412 AND ECO #413 R128 1 2 9 350-4011 NO CHANGES ON THIS SHEET CD4011 SWITCH CLOSED = C29 4.7K BEEPER DELAY 10 9/6/91 ECO #415 1 8 C14 NO CHANGES ON THIS SHEET 2 1 .01uF SW1 550-0001 .1uF ACFAIL IC3 +12 14 R45 1 2 1 2 +12 14 5 R133 12UNFILT 74C14 100K IC5 4 1 2 350-7414 6 D20 350-4011 1 2 CD4011 470K C48 C15 D15 .01uF +12 .1uF ALARMOSC D35 CLAMP +12 R74 +12 150K +12 14 3 SHUTDOWN 8 3 D30 D31 14 IC3 D39 2 10 1 2 Q9 R138 R134 6 1 2 1 2 13 12 LOW BAT WARNING - 9 IC2 2 1 PN2222 COMP C26 1 2 1 OPEN = 2 MIN IC4 1 74C14 24.9K 2 1 7 2M CD4001 CLOSED = 5 MIN + LM339AN Q29 350-7414 350-4001 D18 4 5 12 PN2907 .01uF D22 D46 +12 12UNFILT +5 SW1 14 IC10 R115 C44 550-0001 R130 13 12 100K .22uF R70 10.0K 74C14 6.81K DELETE 350-7414 ON 250 R73 1 2 R47 R68 1 2 10.0K 133K R135 R64 1 2 6.8M R72 D17 R131 1M ACFAIL 34.8K +12 2 1 30.1K 1M 33.2K 2 1 2 1 R129 R46 C25 R137 2.26K C16 22uF 1M 1 1uF INVDISBL CHANGE TO 24.9K Q11 2 PN2907 +5 3 3 ON 250 2 R69 6.81K Q12 1 R71 PN2222 33K DELETE ON 250 723-0001 ALARMOSC CC LOW BATTERY +12 5 J14 R114 12UNFILT 723-0001 +12 20K +12 +12 14 IC10 14 IC10 R139 6 OC AC FAIL J14 1 2 3 1 2 3 4 R106 2 20K 74C14 74C14 3 200K 1 R140 Q33 350-7414 350-7414 1 2 2 1 R107 R108 1 2 Q24 723-0001 1 2 +12 2 PN2222 14 IC10 PN2907 200K Q32 1 3 CC AC FAIL J14 5 6 200K 30.1K 3 PN2222 R141 R105 1 2 3 74C14 723-0001 C41 47K 3 350-7414 1 2 2 Q27 Q28 .01uF 680K R103 4 DB-9 GROUND J14 2 +12 PN2222 2 1 PN2222 14 IC10 1 9 8 12UNFILT R104 20K 1 723-0001 R143 1 2 47K 74C14 2 RS-232 AC FAIL J14 350-7414 R113 1 2 1 20K +12 Q25 723-0001 14 IC10 2 47K 11 10 PN2907 1 UPS SHUTDOWN J14 3 74C14 350-7414 723-0001 R101 1 2 ACFAIL R102 9 DB-9 GROUND J14 D32 1.00K 20ohm 1 2 1 Q26 C42 2 AMERICAN POWER CONVERSION SHUTDOWN D33 PN2907 1 2 1 2 DESCRIPTION SHEET 3 3 R110 Q23 2 1 2 22uF B R109 C43 PN2222 SB208 CIRCUIT BOARD SCHEMATIC D34 1 100K 20K 22uF PRODUCT APCC PART # R111 100K 250/400/600 INT L BACK-UPS 0S-208 DATE BY SCALE DWG REV 3/22/91 ESM E208-10 10 2 1 2 715-0007 2 1 2 1 2 1 12 BZ1 BEEPER 390-0004 2 1 12 12 1 3 2 2 1 2 1 2 1 2 1 2 1 12 12 12 12 12 1 2 1 IC6 2 1 14 CD4066 2 1 350-4066 VDD 12 11 10 12 2 12 12 12 2 1 12 2 1 12 12 2 1 12

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