TB6 series are the main drawings and are either with a 3 digit number or a 5 digit number.
The 3 digit numbers apply to drawings of main assemblies of major sub-assemblies. The 5 digit numbers apply to details and are formed by adding two digits to the sub-assembly numbers.
BB6 series of numbers apply to electronic boards and are similarly sub-divided into 3 or 5 digit series.
n.b. Drawing numbers IN RED are for units that are now obsolete (that I know of) ejm
The major assemblies are:
TB6 100 Assembly of Base (3 shts)
110 03 Sole Plate
110 04-06 Sole Plate Details
120 03 28 degree Pedestal
120 04 Base (2 shts)
120 05-12 Base Details
121 03 R.A. Covers
121 04-07 R.A. Covers Details
122 Lubrication
System
122 03-08 Lubrication System Details
130 Polar
Axis
130 03-13 Polar Axis Details
131 03 DEC. Covers
133 Assembly
of R.A. Balance Weights
133 03-30 Details of R.A. Balance Weights
134 03 Declination Axis
134 04 Details of Declination
Axis
136 Arrangement
of Cable Wrap
136 03-20 Details of Cable Wrap
141 Assembly
of R.A. Wormplate
141 03-38 Details of R.A. Wormplate
143 Assembly
of Torque Drive -- R.A.
143 03-06 Details of Torque Drive -- R.A.
144 03 Wormwheel
144 04-05 Details of wormwheel
147 Assembly
of R.A. Limit Switches (2 shts)
147 03-10 Details of R.A. Limit Switches
149 03 H.A. Circle
149 04-06 H.A. Circle Details
151 Assembly
of Declination Wormplate
151 03 Detail of Declination
Worm
153 Assembly
of Torque Drive -- Declination
154 03 Wormwheel
157 Assembly
of Declination Rotation Sensors
157 03 Details of Declination
Rotation Sensors
159 03 Declination Circle
TB6 200 Assembly of Tube (3 shts)
201 03-09 Details of Tube
203 Assembly
of Tube Balance Weights
203 03-12 Details of Tube Balance Weights
204 Dummy
Mirror
205 03 Corrector Lens Cell
205 04-07 Corrector Lens Cell Details
207 03-05 Fog Tube Details
208 Tube
Temperature Sensors
210 Assembly
of F8 Focusing Gear
210 02 Focusing Gear
Wiring Diagram
210 03-39 Focusing Gear Details
212 F8 Mirror
Cell Assembly
212 03-37 F8 Mirror Cell Details
220 Primary
Mirror Cell Assembly (2 shts)
220 03-04 Primary Mirror Cell Details
221 Arrangement
of Radial Supports
221 03-09 Details of Radial Supports
222 Arrangement
of Axial Supports
222 03-17 Details of Axial Supports
223 Arrangement
of Radial Definers
223 03-06 Details of Radial Definers
224 03-05 Mirror Lifting Plug Details
225 03-04 Mirror Cell Removal Details
226 03-05 Mirror Cell Covers
227 Axial
Definer Assembly
227 03-08 Axial Definer Details
229 Mirror
Temperature Sensors
230 Assembly
of 200 mm Finder (2 shts)
230 03-56 Details of 200 mm Finder
260 Arrangement
of Mirror Cover
260 03-26 Details of Mirror Cover
272 03-27 Details of Instrument Mounting Turntable
290 F15
Top End Assembly
290 02 F15 Focusing Gear Wiring
Diagram
290 03-20 F15 Top Ring Details
TB6 400 Assembly of Control Desk
400 02 Control Desk Wiring
(2 shts)
400 03-10 Control Desk Details
401 Engineering
Control Panel Assembly
401 01 Engineering Control
Panel Wiring
401 02-04 Engineering Control Panel Details
402
DEC RA ST ZD Display Panel Assembly
402 01
DEC RA ST ZD Display Wiring
402 02
DEC RA ST ZD Details
403
UT and Timer Panel Assembly
403 01
UT and Timer Panel Wiring
403 02-05 UT and Timer
Panel Details
404 Power
Supply Panel Assembly
404 01 Power Supply Panel
Circuit Diagram
404 02-04 Power Supply Panel Details
405
V.D.U. Selection Panel Assembly
405 01
V.D.U. Selection Panel Wiring Diagram
405 03-04 V.D.U. Selection
Panel Details
406
Computer Function Control Panel Assembly
406 01
Computer Function Control Panel Wiring Diagram
406 03-04 Computer Function
Control Panel Details
407 Computer
Status and Alarm Panel Assembly
407 01 Computer Status and
Alarm Panel Wiring Diagram
407 03-04 Computer Status and Alarm Panel Details
410 Desk
Power Supply Unit Crate Assembly
410 02 Desk Power Supply Unit
Crate Wiring
410 03-05 Desk Power Supply Unit Crate Details
441 Card
Frame 1 Assembly (Probably obsolete. Contains
switch antibounce cards)
441 02 Card Frame 1 Wiring
441 03-04 Card Frame 1 Details
442 Card
Frame 3 Assembly (In use. Contains focus stepper motor drive board
and precision resistor board)
442 02 Card Frame 3 Wiring
442 03-04 Card Frame 3 Details
443 Card
Frame 2 Assembly (Probably obsolete.
Contains switch antibounce cards)
443 02 Card Frame 2 Wiring
443 03-04 Card Frame 2 Details
460 Circuit
Breaker Panel Assembly
460 02 Circuit Breaker Panel
Wiring
460 03-05 Circuit Breaker Panel Details
470 CAMAC
Crate Assembly
471
CAMAC Up Down Counter Unit (Obsolete. Replaced with RGO32BIT
counter module)
471 03-06 CAMAC Up Down
Counter Unit Details (See also Drawing BB6 l14 and BB6 200)
TB6 500 Cubicle Assembly (Note: See wiring schedules for connections)
510 Power
Unit Assembly
510 02 Power Unit Wiring
510 03-06 Power Unit Details
520 Power
Amplifier Assembly (Probably obsolete. (This
was the Grubb Parsons design)
520 01 Power Amplifier Circuit
Diagram
520 02 Power Amplifier Wiring
Diagram
520 03-06 Power Amplifier Details
521 Power
Amplifier Heat Sink (See also BB6 300)
560 Circuit
Breaker and Contactor Unit Assembly
560 02 Circuit Breaker and
Contactor Unit Wiring
560 03-05 Circuit Breaker and Contactor Unit
Details
TB6 601 F8 Top End Handling Trolley
Assembly
601 03-11 F8 Top End Handling Trolley Details
602 F15 Top
End Handling Trolley Assembly
602 03-07 F15 Top End Handling Trolley Details
603 RA &
DEC Props -- Assemblies
603 03-12 RA & DEC Props -- Details
650 Handset
Assembly
650 03-03 Handset Details
TB6 700 02 Telescope Wiring and Cable Runs (4 shts)
701 Focus
Encoder Line Driver Assembly
701 02 Focus Encoder Line
Driver Wiring
701 03 Focus Encoder Line
Driver Detail
702 DEC Drive
Encoder Line Driver Assembly
702 02 DEC Drive Encoder
Line Driver Wiring
702 03 DEC Drive Encoder Line
Driver Detail
703 RA Drive Encoder
Line Driver Assembly
703 02 RA Drive Encoder Line Driver
Wiring
703 03 RA Drive Encoder Line Driver
Detail
704 Instrument Turntable Encoder Line Driver Assembly
710 Horizon Limit
Switch Assembly
710 02 Horizon Limit Switch Wiring
710 03 Horizon Limit Switch Detail
720
Oil Solenoid Valve Control Unit Assembly (A new drawing shows
this)
720 03 Oil
Solenoid Valve Control Unit Detail
730 Focus Display
Unit Assembly
730 02-07 Focus Display Unit Details (See
also Drawing BB6 004)
740 Finder Graticule
Illumination Control
740 02 Finder Graticule Illumination
Wiring
740 03 Finder Graticule Illumination
Detail
BB6 002 Drive Encoder Line Driver
Board Assembly
002 01 Drive Encoder Line Driver
Board Circuit
002 02 Drive Encoder Line Driver
Board Wiring
BB6 003 Oil
Solenoid Valve Control Board Assembly
003 01 Oil
Solenoid Valve Control Board Circuit
003 02 Oil
Solenoid Valve Control Board Wiring
BB6 004 Focus Display Board Assembly
004 02 Focus Display Board Wiring
BB6 101 Alarm Indication Board 1
Assembly & Wiring
101 01 Alarm Indication Circuit
102 Alarm Indication
Board 2 Assembly & Wiring
n.b. All this became obsolete when the TCS changed to a DEC ALPHA system
BB6 103 01 Timer Counter Circuit
BB6 104 Timer
Control Logic Board Assembly & Wiring
104 01 Timer
Control Logic Board Circuit
BB6 105 Timer
Output Selector Board Assembly & Wiring
105 01 Timer
Output Selector Board Circuit
BB6 106 Timer
Clock Board Assembly & Wiring
106 01 Timer
Clock Board Circuit
BB6 107 Timer
Switch Board 1 Assembly & Wiring
107 01 Timer
Switch Board 1 Circuit
BB6 108
108 01 Timer
Switch Board 2 Circuit
BB6 109 Display
Multiplexer Control Logic Board Assembly & Wiring
109 02 Display
Hultiplexer Control Logic Board Circuit
BB6 110 Display
Multiplexer BCD Invertor Board Assembly & Wiring
110 01 Display
Multiplexer BCD Invertor Board Circuit
BB6 111 Display
Multiplexer Decimal Point Driver Board Assembly & Wiring
111 01 Display
Multiplexer Decimal Point Driver Board Circuit
BB6 112 Audible Alarm Board Assembly
& Wiring
112 01 Audible Alarm Board Circuit
BB6 113 Display
Panels Dimmer Pulse Generator Assembly & Wiring
113 01 Display
Panels Dimmer Pulse Generator Circuit
BB6 114 01 CAMAC Up Down Counter
Circuit (Replaced with RGO32bit modules. n.b. HYTEC 900 modules
can still be used)
114 02 CAMAC
Up Down Counter Wiring (2 shts)
A replacement servo rack was designed at RGO to replace the G.P. design
BB6 115 Torque
Drive Pre Amp Board Wiring & Assembly
115 01 Torque
Drive Pre Amp Board Circuit
BB6 116 Rate
Drive Pre Amp Board Assembly & Wiring
116 01 Rate
Drive Pre Amp Board Circuit
BB6 117 Focus Drive Stepper Motor
Board Assembly & Wiring
117 01 Focus Drive Stepper Motor
Board Circuit
BB6 118 Resistance Thermometer Board
Assembly
118 01 Resistance Thermometer Board
Circuit
BB6 120 Tag Board 2 Assembly
121 Tag Board
3 Assembly
122 Tag Board
1 & 4 Assembly
BB6 200 CAMAC up/down counter (Replaced with RGO32bit modules. n.b. HYTEC 900 modules can still be used)
BB6 300 Power Amplifier PCB This was the old Grubb Parsons design.
Last updated: June 2001 ejm