Hammond pedal solo unit rt consoles service manual

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SECTION I3

SERVICE

MANUAL

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IIT BT- 2, &IIT- 3

HAMMOND ORGAN COMPANY
DIVISION OF HAMMOND CORPORATION
1740 N. 25th Avenue I Melrose Park, [IL 60160

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CONTENTS

Concert Model Consoles. ........... 2 ...... . ................
Pedal Solo Unit ...............................................
How the Pedal Solo Unit Works ...........................
Components of the Pedal Solo Unit .....................
Wiring Diagrams .............................................
The Oscillator ................... . ...... ....... . .......
Frequency Dividers .....
Figure l - Block Diagram RT .. Console .........

Figure 18 - Block Diagram RT-2 ..RT-3 Console
Figure 2 - Schematic Diagram RTA Gen.
Figure 2B - Schematic Diagram RTB- Gen.

Figure 2C -Schematic RTC, RTD, RTE Gen ........
Stop Tablets ..................................................
Note with Regard to the 32-foot Stops
Mute ........................................................
Pedal Solo On' ................ '. ...........................
Volume Control ............................................
Control Tube ............. ......
Tuning .......................................... .. .........
Wiring of Pedal Switch ......... . ............... . .........
Tube Socket Voltages .......................................
Practical Service Suggestions ............................
Pedal Solo Unit Does Not Play ........................ .
Figure 3 - Pedal Solo Generator ..................

Pedal Solo Note Does Not Sound On One Pedal .. .
All Pedals Fail to Play On One Stop Tablet

All Pedals Play the Wrong Pitch .....
Figure 4 - Underside of Generator RTA ...........
Figure 4B -Underside of Generator RTB ...........
Figure 4C -Underside of Generator RTC,RTD,RTE
Key Thumps or Clicks ...... . ....... .............
Hum .................................. . ......... ........
Tuning of Individual Notes
Procedure for Removing Parts .........................
To Remove Control Panel and Clean Contacts ......
Figure 5- Control Panel ........................... . .....
Electrical Parts List ......... . .................

Console Wiring Diagrams - See Section 2
Figure. 19 RT Console
Figure 22 RT-2 Console

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Figure 22A RT-Z Console with Later Generator Wiring

Figure 25 RT-3 Console