Z323 ST1000+ and Z324 ST2000+ Autopilot Service Procedures
Contents
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3. Item Cat No Comments 6 Pin Plug D337 6 Pin Socket D338 Plug and Socket D339 Kit Fluxgate M022 Assembly Drive Module Q041 ST1000 Drive Module 0043 ST2000 Lower Case Q052 Display 0053 Assembly Gearbox Kit 0054 0218 LCD not included Upper Case W113 ST1000 Upper Case W114 ST2000 8306113 ST1000 and ST2000 Service Manual 83130 1 19 ST1000 and ST2000 9 Circuit Diagram and PCB Layout Raymarine 6881 Nzgg Sgg oN
4. YES CHANGE MOTOR RESTART REVERSE 10V ON MOTOR CHECK MOTOR RUNS YES CHANGE MOTOR RESTART CHECK MOTOR CONNECTIONS AND WIRES YES CHANGE FAULTY ITEM S RESTART CHANGE PCB RESTART CHECK FLUXGATE SECTION 5 6 GO TO SeaTalk TEST NEXT PAGE lt YES CHANGE FLUXGATE RESTART CHANGE PCB RESTART D6149 1 14 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 5 2 SeaTalk and NMEA Tests Raymarine FROM OVERALL TEST PRESS STANDBY I SELECT ANY ILLUMINATION LEVEL EXCEPT 0 ON SeaTalk INSTRUMENT CHECK AUTOPILOT DISPLAY ILLUMINATION SWITCHES ON CHANGE PCB RESTART NO YES SELECT ILLUMINATION LEVEL 0 ON SeaTalk INSTRUMENT CHECK AUTOPILOT DISPLAY ILLUMINATION SWITCHES OFF CHANGE PCB RESTART NO YES GO TO NAVIGATOR OR WIND TEST ACCORDING TO TEST RIG SET UP NAVIGATOR TEST WIND TEST SET UP A TRACK ON THE NAVIGATOR TO GIVE A CROSS TRACK ERROR PRESS STANDBY amp AUTO TOGETHER BETWEEN 0 amp 0 3nm PRESS AUTO PRESS 10 amp 10 TOGETHER TO ENTER TRACK MODE CHECK AUTOPILOT DISPLAYS LOCKED HEADING IN FORMAT SHOWN ueue CHECK THAT ALARM SOUNDS AND DISPLAYS ALTERNATE BETWEEN Wn AND SEb dw n u n u
5. CHANGE PCB RESTART RELOCATE NAVIGATOR FOR STRONGER SIGNAL RECONFIGURE NAVIGATOR PCB CHANGE RESTART RESTART NAV TEST RESTART NAV TEST YES UNIT OK END OF TEST UNIT OK END OF TEST D6151 1 5 3 Keypad The keypad can be checked by pressing each key in turn All keys should respond with a tactile metallic click and an audible beep If this is not the case the PCB should be replaced 5 4 Display To check operation of the display refer to section 4 2 ST1000 and ST2000 Service Manual 83130 1 15 Raymarine 571000 and ST2000 5 5 Drive Assembly Remove the drive assembly from the lower case Connect a 10V dc supply to the motor terminals and measure the running current of the drive unit with the drive running freely and not against either end stop 2A Drive Healthy gt 22A Drive Faulty 5 6 Fluxgate Compass Assembly Remove the fluxgate assembly The compass can be checked with a DVM Connect Meter across Pins Resistance and 2 10 ohms 3 and 5 5 ohms 3and4 5 ohms 1 and 3 Open Circuit 83001t4 No Connection D3385 1 Figure 7 Fluxgate Electrical Connections 16 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine 6 Block Diagram and Signal Tables Main Cable Connectors Signal 12VIN Nominal 12V dc OVIN OV SeaTalk Inter
6. R12 o 882 32 8 1 7 1 TR 22 17 R112 Ret lee TR 20 C394 621 14 R52 Res R58 R46 847 R111 R80 14 C15 TET 893 87 R66 C35 26 1853 TR 31 R69 5 R103 R100 TR 16 5 2103 27 99 18 R57 R56 R78 R75 TR 1 nas gt 27 26 28 R102 25 1040 R74 198 C31 C30 R79 833 Ras 827 18 TR R36 5 R34 R26 34 877 876 R44 R60 06 R32 R35 ZA TR 1 Riot 35 Rot R38 R31 11 114 R13 R62 E4 E 1020 619 Irre TR7 16 c7 BET R2 PRT R23 R37 R40 R39 R43 Ces 2 RE o E S Conventional Component Side 1 M1 ooo FIZN S 5 2 ooo c 2 NMEAIN OV D1 NMEAIN DATA gt 1 1 if R41 R42 TR m C13 D 8108 3 2 5 3 sj a TCE I S1 S4 56 03387 1 Figure 10 PCB Layout ST1000 and ST2000 Service Manual 83130 1 21 ST1000 and ST2000 Raymarine 10 PCB Components List Surface Mount Component Side RESIST
7. 95 stan 258 IAS P 5 4 1 ASE 15 rd arant Rar any andi 4 VT 122 29 938A 5 518 suiod ubi als SETdL 20 571000 ST2000 Service Manual 83130 1 Figure 9 PCB Layout ST1000 and ST2000 Raymarine Surface Mount Component Side Ew v oO ly S Les C5 m n RIO R84 883 pan 11 Lp 80 n R20 L2 R59 R67 Re 85 U c2 TES ES D7 R54 64
8. 17 Fluxgate Compass Connector 17 7 Software FIISTONY A 9 19 BSD ANES UMD GIS Mec 19 ST1000 and ST2000 Service Manual 83130 1 3 Raymarine Contents ST1000 and ST2000 9 Circuit Diagram and PCB Layout 20 10 PCB Components List 22 Figure 1 Exploded View ccc aie 7 Figure 2 Display Assembly rr nuca enciende ccce 8 Figure 3 Gearbox 9 Figure 4 Cable 10 Figure 5 Spade Terminal Connections to PCB 11 Figure 6 Test EOuIDITIGEILssx c pieno xt ix enean od iced a ualde 14 Figure 7 Fluxgate Electrical Connections 16 Fights 8 Block iei 18 Figure 9 PCB Layout T 20 Figur POB uL v use outta tinis 21 4 511000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine 1 Description This section of the Service Manual details the Servicing Procedures for the Autohelm ST1000 Tiller Autopilot Catalogue Number 2323 and Autohelm ST2000 Tiller Autopilot Catalogue Number 2324 2 Operation Full details of operation and c
9. 2 MINIATURE AXIAL LAMP LP 1 2 ALP SWITCH MINI 51 6 Raymarine Limited Raymarine Incorporated Raymarine Robinson Way Anchorage Park Portsmouth 22 Cotton Road Unit H Nashua ON BOARD Hampshire England PO3 5TD New Hampshire 03063 4219 USA Tel 44 0 23 9269 3611 Tel 1 603 881 5200 Fax 44 0 23 9269 4642 Fax 1 603 864 4756 www raymarine com www raymarine com 24 ST1000 ST2000 Service Manual 83130 1
10. Case Refitting 1 Clean the LCD and the window in the upper moulding with a lint free anti static wipe Ensure the case seal is seated correctly in the outer groove around the perimeter of the lower case 3 Ensure the O ring seal 5 is located around the pivot pin 4 Lower the upper case onto the assembly and locate with the securing screws 10 8 off Do not over tighten 8 in Ibs max ST1000 and ST2000 Service Manual 83130 1 11 Raymarine 571000 and ST2000 4 Special Functions 4 1 Changing the Operating Sense All units are supplied from the factory set up as Starboard The operating sense of the autopilot can be reversed by pressing the 1 and 1 course change keys together for 5 seconds The unit should beep for 10 seconds to confirm change over and the display should show the new setting either Port or Starboard 4 2 Display Test A special display test feature in the ST1000 200 software checks that the display assembly is fitted correctly after changing the PCB Display test is switched on by momentarily pressing the 1 and 10 keys together The display should scroll all four characters through from O to 9 and then display each annotation This sequence continues until the Standby or Auto key is pressed or the unit is powered down 4 3 Autopilot Type Selection The ST1000 and ST2000 autopilots use the same PCB 0218 but gears in the ST1000 and ST2000 drive modules are different so each pilot
11. be lifted away and a replacement fitted Replacement is a reversal of the removal procedure After securing the gearbox ensure both belts 9 2 off are fitted correctly by hand turning the leadscrew drive pulley 4 and observing correct belt tracking Support Bridge Guide Rod Lead Screw Lead Screw Drive Pulley Motor Motor Cables Gearbox Support Plate Motor Securing Screws x2 Drive Belts Gearbox Securing Screws x4 Drive Nut Ram Tube e gt 12 11 10 7 9 8 03382 1 Figure 3 Gearbox Assembly ST1000 and ST2000 Service Manual 83130 1 9 571000 and ST2000 3 6 Fluxgate Compass Removal and Installation 1 Remove the drive module 2 Remove the gimbal supports 21 2 off 3 Lift out the fluxgate assembly 12 Replacement is a reversal of the removal procedure Note the orientation of the flexible circuit tail 16 The tail of the fluxgate can be easily damaged and care should be taken not to fold or bend it sharply 3 7 Drive Module Assembly 1 Locate the main cable 6 and red and black motor leads in the channel 9 at the side of the lower case 8 2 Enter the ram tube 14 into the case seal 2 3 Lay the drive module into the lower case making sure the cables pass through the cutout 7 in the gearbox support plates as shown in Figure 3 4 Lay the case seal 2 in the outer groove around the perimete
12. case 1 2 Remove the screws 19 3 off securing the PCB 3 Liftthe PCB off its support pillars and disconnect the Fluxgate flexible circuit 16 from connector SK1 Disconnect the power data screen NMEA NMEA and motor spade connectors 22 23 24 from the PCB Replacement PCBs are supplied without an LCD If changing the PCB refer to section 3 3 for instructions to remove and transfer the display assembly to a replacement PCB 6 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine D3386 1 Power and SeaTalk Spade Connectors Gimbal Support Location Screw 2 off NMEA Spade Connectors Motor Spade Connectors Gimbal Support 2 off Case Securing Screw 8 off Drive Unit Support Web Fluxgate Assembly PCB Retaining Screws 3 off see Figure 2 for detail End Cap Pivot Pin Pivot Seal Main Cable Cable Cutout Lower Case Cable Channel Ram Tube End Plate Seal Fluxgate Flexible Circuit LCD Assembly see Figure 1 for detail 3 Motor Gearbox Assembly 1 Upper Case 2 Case Seal 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 19 20 23 24 21 22 b qc poo 9 A 10 Figure 1 ExplodedView ST1000 and ST2000 Service Manual 83130 1 7 571000 and ST2000 3 3 Display Assembly Refer to Figure 2 The display assembly is a snap fi
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14. DIODE BAW 56 D4 9 DIODE ZENER BZX12V ZD1 TRANSISTOR BC807 SOT23 5 12 29 TRANSISTOR BC817 SOT23 TR1 6 11 14 16 17 20 22 23 26 27 28 30 31 33 TRANSISTOR BC868 TR32 ANALOGUE SWITCH 74HC401 IC2 LCD DISPLAY DRIVER 7225G 00 IC3 NEC CA3130 OP AMP IC6 EEPROM 16x16 M9306 1M1 SGS IC7 MICROCONTROLLER 883 154 IC8 PLCC OPTO ISOLATOR PC357 IC9 SOLID CHIP INDUCTOR L1 4 PCB 3015 166 831301t7 Resistor R101 1M0 and capacitoprrs C19 C20 are fitted only if resonator XL1 three legged version is replaced by the two legged version Conventional component tables follow overleaf ST1000 and ST2000 Service Manual 83130 1 23 Raymarine 571000 and ST2000 Conventional Component Side CAPACITOR ELECTROLYTIC 1uF C28 29 37 20 63V 2mm PITCH CAPACITOR 100uF TANT 20 6V3 C4 2 5 PITCH CAPACITOR ELECTROLYTIC 100uF C1 2096 25V 7 5mm MAX DIAM CAPACITOR ELECTROLYTIC 470uF C10 2096 35V DIODE 751 D1 TRANSISTOR FET LRFZ34 60V 30A TR15 18 19 21 REGULATOR 5V WITH RESET IC1 LM2925 VARISTOR ERZCO7DK270 ZNR V1 TYPE 0 BUZZER BZ1 FLEXI CONNECTOR SKT1 SPADE TERMINAL 7 off And either CERAMIC RESONATOR CERALOCK XL1 8 PINS or CERAMIC RESONATOR CERALOCK XL2 2 PINS See note on use of R101 C19 C20 with XL2 Conventional Non Component Side LED DUAL SIDE FIRING GREEN LED1
15. OR 180 526 125mW R80 99 RESISTOR 882 5 125mW R37 46 83 84 RESISTOR 478 5 125mW R106 107 RESISTOR 82R 1 125mW R23 RESISTOR 180R 5 125mW R86 100 RESISTOR 270R 1 125mW 10 RESISTOR 390R 5 125mW R15 32 39 40 RESISTOR 470R 5 125mW R75 78 RESISTOR 1K2 1 125mW R22 24 60 61 62 63 81 RESISTOR 1K5 5 125mW R13 14 85 88 RESISTOR 2 2 5 125mW 3 27 33 38 56 58 68 70 RESISTOR 5 125mW R1 RESISTOR 4 7 5 125mW RESISTOR 5K6 1 125mW R43 47 52 53 65 66 74 79 82 87 102 103 108 112 H7 8 21 76 77 RESISTOR 10K 5 125mW R2 4 16 35 41 45 54 57 59 64 67 69 RESISTOR 15K 5 125mW R36 RESISTOR 22K 5 125mW R34 RESISTOR 33K 1 125mW R5 6 11 12 20 26 RESISTOR 39K 526 125mW R31 42 44 RESISTOR 68K 1 125mW R25 RESISTOR 180K 195 125mW R93 RESISTOR 1 196 125mW R101 CAPACITOR 33pF 5 COG 50V C19 20 CAPACITOR 100pF 10 CER 50V C39 40 CAPACITOR 470pF 10 50V C35 CAPACITOR 1000pF 296 COG 50V C6 7 15 18 38 41 42 43 CAPACITOR 22nF 5 50V C3 30 31 22 ST1000 and ST2000 Service Manual 83130 1 83001t6 ST1000 and ST2000 Raymarine Surface Mount Component Side continued CAPACITOR 0 1uF 20 50V AVX C2 5 8 13 14 16 21 22 34 36 CAPACITOR TANT 1uF 10 16V C26 27 CAPACITOR 2 2uF 20 6V3 SIZE A C32 33 DIODE SOT23 BAS 19 D3 7 DIODE SOT23 BAV 99 06
16. R SEG J FB2 CHS osci cLi J R93 L 19 4 osceLL o2 j CH7 3 5V VLC1 E R13 C 3 IC2 12MHz VLC2 ANALOGUE CRYSTAL R14 TA CONS MULTIPLEXER 15 IC3 LCD1 LCD DRIVER DISPLAY L VRESET TO COMPASS oV lt VBUS RXDATA gt ITR10 11 P3 0 pa DATA OUT _ 5 TXDATA NMEA IN I mmm WHITE 5 ae TRO TRE NMEA IN Q K co VBUS Kp 4p LED GREEN LED TR32 ISOLATOR P189 1 d v VBUS TR26 P3 4 TR27 BZ1 BUZZER TR28 VREG joy Po 7 14 15 OM t RED reto H L swi AUTO KBD3 p4 5 VREG 12V P0 6 820 TR19 N sw2 _STDBY KBD4 p4 4 OM BLACK EST ITR22 TR21L 6 FB2 sw3 1 5 mn 1 4 ov 10 29 lt 55 pn l SW5 10 Poa p PE pi KBD1 F GA F GA T swe 1 py 4 2 F GB lt _ 198 VRESET BIAS MICROCONTROLLER i lt IC NC lt 5 1 Signal flow is left to righf except where indicated D3386 1 Figure 8 Block Diagram 18 571000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 7 Software History Raymarine Version Change Serial Number P10 Introduction 12600001 8 Spares numbers 83130t2a
17. ST1000 and ST2000 Raymarine 7323 ST1000 and 2324 ST2000 Autopilot Service Procedures ST1000 and ST2000 Service Manual 83130 1 1 571000 and ST2000 CE MARKING OF EQUIPMENT REPLACEMENT PARTS WARNING If the Autohelm equipment under repair test calibration installation or setting to work carries the European CE mark only parts and components supplied or approved for such use by Autohelm should be used in order to maintain compli ance with the relevant CE requirements Incorporation use or attachment by any means of parts or components not supplied for or not approved for such use by Autohelm or if supplied or approved for use by Autohelm not properly fitted in accordance with instructions published provided or recommended by Autohelm may cause the equipment to malfunc tion and in particular to become unsafe or to no longer meet the relevant CE requirements In these circumstances Raytheon Marine Europe Ltd excludes liability to the fullest extent permissible in law for any loss or damage including any liability for its contribution to such loss or damage by its negligent acts or omissions 2 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine Contents IMP LM 5 2 p M 5 3 Disassembly and Assembly
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19. alibration are given in the User Handbook Publication Number 81130 1 ST1000 and ST2000 Service Manual 83130 1 5 571000 and ST2000 3 Disassembly and Assembly Before dismantling the autopilot check the operating sense port starboard if the PCB condition allows All new PCBs are factory set to starboard operating sense A replacement PCB in a unit set up for port operation must be set to port operation The autopilot may be calibrated to suit a particular vessel Note the calibration settings and set up the new PCB if required If the spares PCB contains software of a higher issue than the PCB it replaces the relevant Operating Supplement s must be included when the equipment is returned to the customer Replacement PCBs set up as ST1000 Component identification numbers refer to Figure 1 Exploded View unless a detail figure is identified at the start of a section 3 1 Upper Case Removal 1 Ensure the drive unitis fully retracted 2 Remove the case securing screws 10 8 off 3 Liftoffthe upper case 1 Do not run the actuator assembly with the upper case removed and the PCB in place There is insufficient clearance between the guide bridge and the PCB and damage to PCB components may result If itis required to run the actuator the PCB should be unscrewed and lifted slightly 3 2 PCB Removal All work on the PCB should be carried out taking normal static precautions 1 Remove the upper
20. mittent 12V nominal pulse streams NMEAIN Intermittent 12V nominal pulse streams NMEAIN Intermittent 12V nominal pulse streams 83130t10 Fluxgate Compass Connector SKT1 Pin No Signal 1 Not Used 2 VRESET Nominal 2 5V DC 3 F GB Compass Input 2 Nominal 2 5V DC 4 F GA Compass Input 2 Nominal 2 5V DC 5 F G DRIVE 17 cycles at 7 9 KHz driven twice every 1 16 second 6 OV DC 83130t11 ST1000 and ST2000 Service Manual 83130 1 17 571000 and ST2000 03 VBUS D1 Di 12V REGULATOR 12V 5V 1 1 1 71 VREG 2 Zi 12V ov P8 5 P8 4 SK INH i R22 dad ji B He IC7 A R23 cs CHO R24 DM Id C15 EEPROM CH1 ov L__Irst F GA CH2 N BUSY SCK 1 F GB CH3 IC6 1 812 3 3 8I L 3 J FB1 CH4 P146 C6c8 E INTEGRATOR COMPARATO
21. n the display showing Cal Off The user cannot then change any settings To disable calibration 1 Press and hold the 1 and Standby keys for 10 seconds until the display shows CAL ON 2 Toggle calibration access between ON and OFF using the 1 and 1 keys 3 Store the selected setting by pressing the 1 and Standby keys for 10 seconds ST1000 and ST2000 Service Manual 83130 1 13 5 Functional Test ST1000 and ST2000 Fuse Supply 12 Red Screen Navigator or Wind Instrument with NMEA Output D3384 1 Figure 6 Test Equipment 5 1 Overall Test APPLY POWER TO UNIT CHECK UNIT BEEPS FLASHES C AND FINALLY DISPLAYS A MAGNETIC HEADING ote YES CHANGE PCB RESTART PRESS amp HOLD 10 KEY CHECK MOTOR RUNS PRESS amp HOLD 10 KEY CHECK MOTOR RUNS PRESS AUTO amp CHECK DISPLAY SHOWS A YES DISCONNECT POWER amp REMOVE DRIVE MODULE DISCONNECT MOTOR SPADE TERMINALS amp APPLY 10V DC TO MOTOR TERMINALS CHECK MOTOR RUNS CHANGE PCB RESTART HOLD UNIT HORIZONTAL ROTATE IT IN CLOCKWISE DIRECTION CHECK PUSHROD RETRACTS STBD SET UP OR EXTENDS PORT SET UP OR RETRACTS PORT SET UP HOLD UNIT HORIZONTAL ROTATE IT IN AN ANTI CLOCKWISE DIRECTION CHECK PUSHROD EXTENDS STBD SET UP
22. r of the lower case Figure 4 Cable Routing 10 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine 3 8 PCB Installation Before refitting the PCB check that the drive assembly is fully retracted Failure to d this results in damage to the PCB at installation Check the PCB to ensure that the four FET drive transistors are mounted verti cally and not bent over at an angle 1 Remove the display assembly from the old and fitto the new board see section 3 3 Connect the main cable and motor cable wires to the PCB tags Ensure correct connection Refer to Figure 4 LLL 12V Brown M1 Red _ NMEA IN Green OV Blue M2 Black NMEA IN White SeaTalk Data Yellow Motor Cable v Cable Connector tags viewed from Component Side of D3388 1 Figure 5 SpadeTerminal Connections to PCB 3 Connect the fluxgate flexible circuit tail 16 into PCB socket SKT1 Ensure correct orientation Refer to Figure 8 Lower the PCB onto the location pillars Lock in place with the securing screws 19 3 off Power up the unit and confirm display operation by momentarily pressing the 1 and 10 degree keys The display should count up from 010 9 on all four characters then display all other annotations Observe the display and confirm all segments are switching on 3 9 Upper
23. runs a different program Both sets of software are contained within the same chip To select the correct program 1 Press the 10 and 1 keys until the display shows the pilot type number 2000 or 1000 approx 5 seconds 2 Pressthe 10 and 1 keys again until the display flashes the pilot type number approx 5 seconds Select the correct pilot type using the 1 and 1 keys 4 Savethe setting by pressing the 10 and 1 keys until the normal Standby display appears approx 2 seconds Changing Autopilot type clears all calibration setting compass linearisation and returns the unit to factory setting 4 4 Display of Software Code The software code of the pilot can be displayed by switching the pilot to standby mode and pressing the Standby key until the display shows P followed by a number approx 10 seconds The number indicates the version of software fitted for example P 0 6 indicates Version 6 software 12 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine 4 5 Calibration Lockout Access to the compass linearisation and calibration functions on the ST1000 2000 autopilots can be prevented This can be a useful feature for example to charter boat operators who spend a lot of time tuning the pilot to the boat only to find a customer alters the settings at a later date Any attempt to linearise the compass or enter calibration when the lockout function is enabled results i
24. t which is retained on the PCB by four moulded lugs 2 The backlight diffuser 6 clips into the display bezel 1 and retains the LCD and its elastomer connector 3 Bezel Bezel Fixing Lug Elastomer Spring Lug LCD Oy Us cm Diffuser D3381 1 Figure 2 Display Assembly The display is back lit via the diffuser by two green LEDs which are mounted directly on the PCB Removal 1 Undlip the bezel lugs 2 from the PCB Upper pair first then lower pair 2 Easethe complete display assembly from the board Installation If fitting a new LCD the marked protective film must be removed 1 Place the LCD 5 into the bezel 1 note orientation 2 Place the elastomer connector 3 on top of the LCD connection strip note orientation 3 Insertthe diffuser 6 into the bezel so thatthe two spring lugs 4 locate into the display bezel 4 Pressthe display assembly on to the PCB ensuring all four bezel lugs 2 locate correctly 8 ST1000 and ST2000 Service Manual 83130 1 ST1000 and ST2000 Raymarine 3 4 Drive Module Removal 1 Remove the PCB 2 Lift out the drive assembly and ease the ram tube 14 from the case seal 2 3 5 Drive Motor Replacement Refer to Figure 3 1 Remove the drive module 2 Remove the gearbox securing screws 10 4 off 3 Separate the support plates 7 2 off 4 Remove the motor securing screws 8 2 off from the rear plate The motor can now
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