Honeywell SG-60 manual

Airport Systems Installation and Operation Guide for High Intensity Obstruction Lighting System Model SG-60 Manual Number EPM-00000019-001 Honeywell Airport Systems 2162 Union Place Simi Valley, CA 93065 Phone (805) 581-5591 Fax (805) 581-5032 www.oblighting.com Copyright 2002 Honeywell Inc. All Rights Reserved[...]

Airport Systems EPM-00000019-001 i Rev A HISTORY OF REVISIONS Rev. Comment ECO# Approved Date A First Release (New Boards) 3637 S. Hammond 8/30/2002 NOTICE The integrity and reliability of Honeywell airport lighting systems are dependent on the use of Honeywell parts and components. To ensure the optimum performance and reliability of your Honeywel[...]

Airport Systems EPM-00000019-001 ii Rev A DISCLAIMERS This manual could contain technical inaccuracies or typographical errors. Honeywell reserves the right to revise this manual from time to time of the contents thereof without obligation of Honeywell to notify any person of such revision or change. Details and values given in this manual are aver[...]

Airport Systems EPM-00000019-001 iii Rev A TABLE OF CONTENTS SAFETY INFORMATION ............................................................................................... V SECTION 1. GENERAL INFORMATION ..................................................................... 1-1 1.1 S COPE ........................................................[...]

Airport Systems EPM-00000019-001 iv Rev A 3.3.4 Communications Circuitry .............................................................................................. 3-10 SECTION 4. TROUBLESHOOTING ............................................................................ 4-1 SECTION 5. MAINTENANCE ..............................................[...]

Airport Systems EPM-00000019-001 v Rev A SAFETY INFORMATION This section contains general safety instructions for using your Honeywell equipment. Task and equipment-specific Warnings are included in other sections of this manual where appropriate. Read all Warnings and follow all instructions carefully. Failure to do so may result in personal injur[...]

Airport Systems EPM-00000019-001 vi Rev A QUALIFIED PERSONNEL The term “qualified personnel ” is defined here as individuals who thoroughly understand the equipment and its safe operation, maintenance, and repair. Qualified personnel are physically capable of performing the required tasks, familiar with all relevant safety rules and regulations[...]

Airport Systems EPM-00000019-001 vii Rev A WARNING! KEEP AWAY FROM LIVE CIRCUITS. OPERATION AND MAINTENANCE PERSONNEL MUST OBSERVE ALL SAFETY REGULATIONS AT ALL TIMES. DO NOT CHANGE PLUG-IN COMPONENTS OR MAKE ADJUSTMENTS INSIDE EQUIPMENT WITH THE HIGH VOLTAGE SUPPLY ON. UNDER CERTAIN CONDITIONS, THERE IS A POTENTIAL FOR SERIOUS INJURY FROM CIRCUITS[...]

Airport Systems SG-60 High Intensity Strobe System 1-1 Manual EPM-00000019 Rev A SECTION 1. GENERAL INFORMATION 1.1 Scope This manual provides information about the installation, operation, and maintenance of the StrobeGuard  , Model SG-60, High Intensity Obstruction Lighting System manufactured by Honeywell. 1.2 General Description The StrobeGu[...]

Airport Systems SG-60 High Intensity Strobe System 1-2 Manual EPM-00000019 Rev A Figure 1 - 1 : Model SGC-60 Master Controller[...]

Airport Systems SG-60 High Intensity Strobe System 1-3 Manual EPM-00000019 Rev A Figure 1 - 2 : Model SGF-60 Flashhead[...]

Airport Systems SG-60 High Intensity Strobe System 1-4 Manual EPM-00000019 Rev A 1.3 Safety Precautions The following general safety precautions must be observed during all phases of operation, service, and repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards[...]

Airport Systems SG-60 High Intensity Strobe System 1-5 Manual EPM-00000019 Rev A WARNING! This system uses lethal voltages in the Flashhead. Unless absolutely necessary, do not attempt to service or adjust the equipment with AC line power applied. Safety interlock switches are provided in the Flashhead enclosure to interrupt main AC power to the po[...]

Airport Systems SG-60 High Intensity Strobe System 1-6 Manual EPM-00000019 Rev A 1.4 Specifications Light Output: Day Intensity .............................................. 270,000 ± 25% effective candelas, single flash Twilight Intensity .......................................... 20,000 ± 25% effective candelas, single flash Night Intensity ..[...]

Airport Systems SG-60 High Intensity Strobe System 1-7 Manual EPM-00000019 Rev A Flashhead Fail ......................................... Relay K1 de-energized and LED DS29 Off Photocell Fail .......................................... Relay K2 de-energized and LED DS30 Off Power Fail ................................................ Relay K3 de-ener[...]

Airport Systems SG-60 High Intensity Strobe System 2-1 Manual EPM-00000019 Rev A SECTION 2. INSTALLATION & POWER UP WARNING! Modifications to the Power Supply are required for certain applications. Remove input power at circuit breakers and discharge capacitors with an approved grounding rod before attempting any necessary modifications. 2.1 Un[...]

Airport Systems SG-60 High Intensity Strobe System 2-2 Manual EPM-00000019 Rev A 2.2.1.1 System Controls Set Master Controller switches ( Figure 1 - 1 , Page 1-2 ) as follows: POWER SWITCH -------------------------------------------------------------------------- OFF LOCAL / REMOTE Switch ------------------------------------------------------------[...]

Airport Systems SG-60 High Intensity Strobe System 2-3 Manual EPM-00000019 Rev A • SW2 – ( Figure 2 - 10 , Item 2, Page 2-25 ) This switch is used to set for Catenary operation (suspended cable warning lights) and for Dual systems (Red lights at night, and white strobes during the day). § SW2-1 – Set to ON (up) for Catenary system. § SW2-2 [...]

Airport Systems SG-60 High Intensity Strobe System 2-4 Manual EPM-00000019 Rev A 2.2.2.1 Power Configuration The Flashhead(s) are factory set for the correct AC input line voltage. However, the user shall verify that the AC line voltage selector block (located on the transformer board on top of transformer T1, Figure 1 - 2 , Page 1-3 ) is labeled w[...]

Airport Systems SG-60 High Intensity Strobe System 2-5 Manual EPM-00000019 Rev A • SW3 – ( Figure 2 - 11 , Item 3, Page 2-26 ) Used to specify the ID number for the Flashhead. Each Flashhead must be set with a unique ID number as indicated on the installation drawings. There is a diagram next to the switch showing the values for the switch. The[...]

Airport Systems SG-60 High Intensity Strobe System 2-6 Manual EPM-00000019 Rev A 7. Refer to Figure 2 - 1 below. Dress the electrode wires away from the sides of the reflector. 8. Close and fasten the Flashhead cover. Figure 2 - 1 : Flashtube Installation 2.3 Installation 2.3.1 SGC-60 Master Controller The Master Controller is connected to Flashhea[...]

Airport Systems SG-60 High Intensity Strobe System 2-7 Manual EPM-00000019 Rev A Typically, the Flashhead is mounted to a bracket, which is then attached to the structure. Honeywell can supply brackets for most types of installations. A detailed drawing for mounting the Flashhead is shown in Figure 2 - 3 , Page 2-10 . 2.3.2.1 Setting the Flashhead [...]

Airport Systems SG-60 High Intensity Strobe System 2-8 Manual EPM-00000019 Rev A 2.3.4 Cables and Junction Boxes The cables shall be properly supported and terminated in the junction boxes per the detailed description provided in section 2.4 , page 2-11 of this document. Additional information regarding cables and junction box installation can be f[...]

Airport Systems SG-60 High Intensity Strobe System 2-9 Manual EPM-00000019 Rev A Figure 2 - 2 : Master Controller Mounting Dimensions[...]

Airport Systems SG-60 High Intensity Strobe System 2-10 Manual EPM-00000019 Rev A Figure 2 - 3 : Flashhead Outline and Mounting Dimensions[...]

Airport Systems SG-60 High Intensity Strobe System 2-11 Manual EPM-00000019 Rev A 2.4 Installation Wiring Follow the procedure below to perform the installation wiring. Note that the wiring of the Alarm Relay outputs is customer and site specific and is therefore not specified in this manual. Figure 2 - 5 : Typical Wiring Installation[...]

Airport Systems SG-60 High Intensity Strobe System 2-12 Manual EPM-00000019 Rev A 2.4.1 Master Controller to Photocell Wiring The photocell is supplied with a length of wire attached. If a longer wire is needed, this should be accomplished using a junction box. Make the interconnect between the external Photocell and the Master Controller TB2 per F[...]

Airport Systems SG-60 High Intensity Strobe System 2-13 Manual EPM-00000019 Rev A 2.4.4 Master Controller Wiring For Dual Systems If your installation is a Dual (Red/White) system, you must make additional connections to coordinate between the High Intensity Strobe System and the Red Light System. See the sections below for wiring details. For conf[...]

Airport Systems SG-60 High Intensity Strobe System 2-14 Manual EPM-00000019 Rev A If your red light system has a Honeywell 9LCA Series Red Light Controller, locate the Alarm terminals and Flasher Bypass terminals corresponding to the top beacon, and make the following connections: Master Controller TB6-1 ----------------- to ---------------------- [...]

Airport Systems SG-60 High Intensity Strobe System 2-15 Manual EPM-00000019 Rev A Figure 2 - 5 : Flex Conduit Typical Installation Layout 2.4.6.1 Procedures for installation of conduit and tower wiring 1. All conduit, junction boxes, mounting hardware, fixtures, etc. provided for installation of the electrical system (i.e. lighting or equipment pow[...]

Airport Systems SG-60 High Intensity Strobe System 2-16 Manual EPM-00000019 Rev A the junction box ports. Do not begin to run wire through a junction box port before a chase nipple or grommet is in place. 5. Before running the wire into a box insure the wire insulation will be protected from any sharp edges on the junction boxes . Pieces of carpet,[...]

Airport Systems SG-60 High Intensity Strobe System 2-17 Manual EPM-00000019 Rev A and the connection should be at the top end of the junction box. Wiring from ports in the sides of junction boxes should also be made such that the wire nuts are at the top of the junction box with the wire nut openings pointing downward, (see Figure 2 - 6 , Page 2-19[...]

Airport Systems SG-60 High Intensity Strobe System 2-18 Manual EPM-00000019 Rev A 2.4.7 Junction Box Details This section will detail the proper wire interconnection details for the input voltage and data cable to the flashhead pigtail cable. These connections are very important to the proper operation of the lighting system. The flashhead pigtail [...]

Airport Systems SG-60 High Intensity Strobe System 2-19 Manual EPM-00000019 Rev A Figure 2 - 6 : Junction Box Wiring Details[...]

Airport Systems SG-60 High Intensity Strobe System 2-20 Manual EPM-00000019 Rev A Figure 2 - 7 : Flex Conduit Installation Detail[...]

Airport Systems SG-60 High Intensity Strobe System 2-21 Manual EPM-00000019 Rev A The flex conduit will need to be properly mounted to the horizontal and vertical struts by way of the supplied 20-inch cable ties. These cable ties should be placed at a minimum of 3 feet apart for proper bonding to the tower structure. The distance between the cable [...]

Airport Systems SG-60 High Intensity Strobe System 2-22 Manual EPM-00000019 Rev A Item 6 is a shield drain wire that will not be used for interconnection. This wire should be cut off flush from the cable when the outer jacket is stripped back for interconnection of the system. The following section is a guideline to a proper installation of the WC0[...]

Airport Systems SG-60 High Intensity Strobe System 2-23 Manual EPM-00000019 Rev A 9. The power wires should be spliced together using split bolt connectors. The data wires should be spliced together using Scotch® Twist Lock connectors. After splicing, ensure all wires are secure by pulling on each wire. Wrap each connection with at least 6 wraps o[...]

Airport Systems SG-60 High Intensity Strobe System 2-24 Manual EPM-00000019 Rev A ** It is extremely important to connect all Data cable inner shields together, but isolate them from all other shields and grounds ** Figure 2 - 10 : Flashhead Cable[...]

Airport Systems SG-60 High Intensity Strobe System 2-25 Manual EPM-00000019 Rev A Figure 2 - 10 : Master Controller Circuit Board[...]

Airport Systems SG-60 High Intensity Strobe System 2-26 Manual EPM-00000019 Rev A Figure 2 - 11 : Flashhead Digital Control Board[...]

Airport Systems SG-60 High Intensity Strobe System 2-27 Manual EPM-00000019 Rev A 2.5 Final Installation Check Before applying power to the equipment, perform the procedures in Sections 2.5.1 - 2.5.4 . If any test does not pass, please consult SECTION 4. TROUBLESHOOTING in this manual or call Honeywell Technical Support at (805) 581-5591. 2.5.1 Pre[...]

Airport Systems SG-60 High Intensity Strobe System 2-28 Manual EPM-00000019 Rev A 6. Verify open circuit between TB5-S and TB5-A (both on Data Cable) 7. Verify open circuit between TB5-S and TB5-B (both on Data Cable). 8. In one of the top-most Flashheads, install a jumper (or alligator clip) between TB1-5 and TB1-6. 9. Verify short circuit between[...]

Airport Systems SG-60 High Intensity Strobe System 2-29 Manual EPM-00000019 Rev A § DS32 - 33 – ( Figure 2 - 10 , Item 5, Page 2-25 ) The indications on these lights are dependent on the setting for external red light system on SW2. If SW2-2 is set for an EXTERNAL RED system (ON), then • DS32 – ON indicates there has been a red light system [...]

Airport Systems SG-60 High Intensity Strobe System 2-30 Manual EPM-00000019 Rev A 7. Verify that the LED test sequence has started. The test sequence will exercise every LED and relay (e.g. it will quickly sweep through the Flashhead Status LEDs in red and green mode). After the test sequence completes, the Flashhead status LEDs for the selected nu[...]

Airport Systems SG-60 High Intensity Strobe System 2-31 Manual EPM-00000019 Rev A 6. If you have a Dual (Red/White) System , the Red Lights should be OFF. 7. If you have a Catenary System , Verify Catenary flash timing. (a) All Flashhead on Middle Level should flash together. (b) All Flashheads on Top Level should flash together (c) All Flashheads [...]

Airport Systems SG-60 High Intensity Strobe System 2-32 Manual EPM-00000019 Rev A 6. If you have a Dual (Red/White) System: Verify normal red night mode operation. (a) Verify that all Flashheads are OFF (b) Verify that all Red Lights are ON and flashing properly, and the Red Light Controller does not indicate any alarms in the top-most Red Beacons.[...]

Airport Systems SG-60 High Intensity Strobe System 2-33 Manual EPM-00000019 Rev A 2.6.5 Verify Photocell Operation Connected to Controller 1. Verify proper mounting and orientation of photocell. Photocell shall face toward the polar sky (e.g., North in the northern hemisphere), not toward the sun. 2. Set LOCAL / REMOTE switch to REMOTE. 3. Verify t[...]

Airport Systems SG-60 High Intensity Strobe System 2-34 Manual EPM-00000019 Rev A for normal operation. If any test did not pass, please consult SECTION 4. TROUBLESHOOTING in this manual or call Honeywell Technical Support at (805) 581- 5591.[...]

Airport Systems SG-60 High Intensity Strobe System 3-1 Manual EPM-00000019 Rev A SECTION 3. PRINCIPLES OF OPERATION 3.1 Overall Description The SG-60 High Intensity Obstruction Lighting System meets the requirements of the FAA Advisory Circular 150/5345-43E. Depending on system configuration, the Flashheads are either type L-856 (simultaneous flash[...]

Airport Systems SG-60 High Intensity Strobe System 3-2 Manual EPM-00000019 Rev A energy storage capacitors discharge rapidly through the flashtube. The high discharge current briefly heats the xenon gas to great temperatures, producing a bright flash. The short-circuit output current of the T1 transformer is limited to less than the flashtube'[...]

Airport Systems SG-60 High Intensity Strobe System 3-3 Manual EPM-00000019 Rev A WARNING! HIGH VOLTAGE is on the energy storage capacitors C1, C2, C3A and C3B when the High Voltage Indicator DS1 indicator is lit! (DS1 is the neon lamp located on the High Voltage & Trigger board - do not confuse the High Voltage Indicator DS1, with the PWR ON la[...]

Airport Systems SG-60 High Intensity Strobe System 3-4 Manual EPM-00000019 Rev A The Digital Board functions are discussed in more detail below. 3.2.2.1 Power Supplies The Digital board rectifies (DB1) and filters (C4) the 24VAC output of the Flashhead T2 transformer, and uses the resulting unregulated voltage to power the K1, K2, and K3 relays. Th[...]

Airport Systems SG-60 High Intensity Strobe System 3-5 Manual EPM-00000019 Rev A position is shown on the board silkscreen. Note that ON means zero, and that OFF means the indicated value (negative binary). The Digital Board will only transmit a reply when its number is specified by the Master Controller. The Digital Board monitors its transmission[...]

Airport Systems SG-60 High Intensity Strobe System 3-6 Manual EPM-00000019 Rev A 3.2.2.4 Flash Control To fire the flashtube, the Digital Board pulls down the trigger request line (P2-17) for about 500uS. This signals the Trigger/High-Voltage Card to trigger the flashtube. The Digital Board will issue its trigger request on a T2 zero-crossing. (Nor[...]

Airport Systems SG-60 High Intensity Strobe System 3-7 Manual EPM-00000019 Rev A 3.2.3.1 High Voltage Rectification This section of the Trigger/High-Voltage Board provides the DC to charge the energy storage capacitors that power the flashtube. The high voltage AC from the ferro -resonant power transformer T1 pins T1-7 and T1-8 is output to the Tri[...]

Airport Systems SG-60 High Intensity Strobe System 3-8 Manual EPM-00000019 Rev A 3.3 SGC-60 Master Controller 3.3.1 Power Supply The Master Controller input power is connected to PB1, which then feeds transformer T1 (under the switch panel). The Master Controller can accept a number of input voltages, depending on the primary tap connections to T1,[...]

Airport Systems SG-60 High Intensity Strobe System 3-9 Manual EPM-00000019 Rev A The Master Controller gives previously good Flashheads four chances to reply (addressing that Flashhead repeatedly), before marking them bad. Previously bad Flashheads are given one chance to reply OK before moving on to the next Flashhead. The Master Controller checks[...]

Airport Systems SG-60 High Intensity Strobe System 3-10 Manual EPM-00000019 Rev A during the daytime. In this case, the Master Controller will briefly try the Red Lights each night until the top beacon is repaired. Troubleshooting Tip : To check system communications independent of most Flashhead failures, place a jumper across TB6-1 and TB6-2, set[...]

Airport Systems SG-60 High Intensity Strobe System 3-11 Manual EPM-00000019 Rev A Figure 3 - 1 : Master Controller Board Schematic[...]

Airport Systems SG-60 High Intensity Strobe System 3-12 Manual EPM-00000019 Rev A Figure 3 - 2 : SGF-60 Flashhead System Schematic[...]

Airport Systems SG-60 High Intensity Strobe System 3-13 Manual EPM-00000019 Rev A Figure 3 - 3 : SGF-60 Digital Board Schematic[...]

Airport Systems SG-60 High Intensity Strobe System 3-14 Manual EPM-00000019 Rev A Figure 3 - 4 : SGF-60 Trigger/High-Voltage Board Schematic[...]

Airport Systems SG-60 High Intensity Strobe System 4-1 Manual EPM-00000019 Rev A SECTION 4. TROUBLESHOOTING Refer to the troubleshooting flowcharts . Replace components in the order stated, and keep track of those replaced. The following troubleshooting procedures presume that all fuses, interlocks, and controls are functioning properly. Note that [...]

Airport Systems SG-60 High Intensity Strobe System 4-2 Manual EPM-00000019 Rev A The charts assume that that you have already eliminated these as possible causes for the observed problem. The charts may instruct you to make temporary changes for testing (such as select operating modes manually, or installing a jumper). These temporary measures are [...]

Airport Systems SG-60 High Intensity Strobe System 4-3 Manual EPM-00000019 Rev A Are any LEDs on Master Controller lit? All Flashheads stuck in Day Mode Yes No Replace MC Fuse F1. Is Master Controller COM OK LED lit? (DS34) Visually examine MC for damage near TB5. If damaged, replace Master Controller PC Board. Otherwise, replace Master Controller [...]

Airport Systems SG-60 High Intensity Strobe System 4-4 Manual EPM-00000019 Rev A Flashhead does not flash Press DB SW1 pushbutton 1 sec and release. Yes No Power Supply Failure: Replace Digital Board. Is THVB DS1 High Voltage Indicator Lit? Is DB DS1 red LED (+5V Indicator) lit? Yes No Do DB DS2 (yellow) and DS3 (green) blink twice together? Yes Ye[...]

Airport Systems SG-60 High Intensity Strobe System 4-5 Manual EPM-00000019 Rev A Is DB DS3 green LED steady off ? Flashhead stuck in Day Mode Yes No Locate and repair break. Are Comm wires correctly wired in FH TB1? 1 Yes Are Comm wires correctly wired in MC TB5? 2 Remove all power from FH and MC. Perform Comm Wiring tests (Installation Check 3 , a[...]

Airport Systems SG-60 High Intensity Strobe System 4-6 Manual EPM-00000019 Rev A Red Lights don’t turn on at night. Connect wiring from MC TB -6 to Top Red Beacon alarms. 2 1. Disconnect RLC Photocell. 2. Connect wiring from MC Red/Night relay K4 to RLC Photocell Input. 1 Repair Failed Top Beacon. Manually turn on Red Lights at RLC. Yes Yes Does [...]

Airport Systems SG-60 High Intensity Strobe System 4-7 Manual EPM-00000019 Rev A Yes Set MC switch SW-2 to on . See General System Troubleshooting No Does MC show Green FH Status LED for each working FH? A Flashhead is out of sync with its catenary level. All Flashheads are flashing together, but not in catenary pattern. All Flashheads flash too sl[...]

Airport Systems SG-60 High Intensity Strobe System 5-1 Manual EPM-00000019 Rev A SECTION 5. MAINTENANCE 5.1 SGC-60 Master Controller The Master Controller required no periodic maintenance. However, below are the instructions for installing a new transformer 5.1.1 Transformer Replacement Figure 5 - 1 : SGC-60 Replacement Transformer Transformer repl[...]

Airport Systems SG-60 High Intensity Strobe System 5-2 Manual EPM-00000019 Rev A 10. Attach wires with the push on connectors to the following terminals. (a) White wire to the outer bottom right terminal (b) Black wire to the terminal that matches the Controller input voltage. ( 240v shown in Figure 5-1. ) 11. You will need to replace the terminal [...]

Airport Systems SG-60 High Intensity Strobe System 5-3 Manual EPM-00000019 Rev A 5. Unpack the new flashtube. Do not touch the glass envelope - contamination from a fingerprint will degrade the reliability of the flashtube. 6. Holding the flashtube by its metal ends, center it in the reflector assembly and snap it into place. Make sure the red mark[...]

Airport Systems SG-60 High Intensity Strobe System 6-1 Manual EPM-00000019 Rev A SECTION 6. REPLACEMENT PARTS Description Part Number SGF-60 Flashhead Capacitor, 1 µ F, C1 ----------------------------------------------------- 77-4220 Capacitor, 3 µ F, C4 ----------------------------------------------------- 77-3311 Capacitor, 12.5 µ F, C2 ------[...]

Airport Systems SG-60 High Intensity Strobe System 7-1 Manual EPM-00000019 Rev A SECTION 7. ANTENNA OBSTRUCTION LIGHT (AOL) This addendum includes the following Figures: Figure 7 - 1 : SG-60 AOL Flashhead Mounting Dimensions Figure 7 - 2 : SG-60 AOL Power Supply Mounting Dimensions Figure 7 - 3 : SG-60 AOL Wiring Installation Figure 7 - 4: SG-60 AO[...]

Airport Systems SG-60 High Intensity Strobe System 7-2 Manual EPM-00000019 Rev A Figure 7 - 1 : SG-60 AOL Flashhead Mounting Dimensions[...]

Airport Systems SG-60 High Intensity Strobe System 7-3 Manual EPM-00000019 Rev A Figure 7 - 2 : SG-60 AOL Power Supply Mounting Dimensions[...]

Airport Systems SG-60 High Intensity Strobe System 7-4 Manual EPM-00000019 Rev A Figure 7 - 3 : SG-60 AOL Wiring Installation[...]

Airport Systems SG-60 High Intensity Strobe System 7-5 Manual EPM-00000019 Rev A Figure 7 - 4 : SG-60 AOL Flashhead Component Locations[...]

Airport Systems SG-60 High Intensity Strobe System 7-6 Manual EPM-00000019 Rev A Figure 7 - 5 : SG-60 AOL Power Supply Component Locations[...]

Airport Systems SG-60 High Intensity Strobe System 7-7 Manual EPM-00000019 Rev A Figure 7 - 6 : SG-60 AOL Schematic[...]