Motorola Gm Series Detailed 6864115b62 B Manual
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Controller T12 / Schematic Diagrams3-47 9C0325 0.1uFNU 10K R0332C0331 0.1uF U0331-2 PWR_GND 3GND5VCC 2C0354 0.1uF C0342 18K U0341-2 LM2904 6 57 8 42 5VDD 3VSS 6 0.1uF C0302 10 R0343 0 RX_AUD_RTN5VD FLAT_RX_SND 3V3 SPI(0:10)R0324 C0303 100pF 0.1uF C03050.1uF C0343 0.1uF 1uF C0324U0351 LP2951ACMM-3.3 2C0351 0.1uF 74AHCT1G125U0331-1 2 A 1 OE 4 Y33uF C0353 .022uF C0352 10K R0333SS 9 VCCA26 VCCD7 VSSA11 VSSA217 VSSA318VSSD12 XCLK 6 10K R0341 D0301 5 3 1 24 8 4 U0342 TC4S66F 4CNTL 1 47K R0346 47K R0347 1uF...
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3-48Controller T12 / Schematic Diagrams7.1 Controller T12 Parts List Circuit RefMotorola Part NoDescriptionC0101 2113740F51 100pF 5% 50V C0107 2113741F25 1nF 50V C0112 2113743E20 100nF 16V C0121 2113743E20 100nF 16V C0122 2113743E20 100nF 16V C0131 2113740F35 22pF 5% 50V C0132 2113740F35 22pF 5% 50V C0141 2113743E20 100nF 16V C0151 2113741F49 10nF 50V C0201 2311049A57 10uF 10% 16V C0202 2311049A57 10uF 10% 16V C0204 2113743E20 100nF 16V C0212 2311049A57 10uF 10% 16V C0221 2113743E20 100nF 16V C0222...
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Controller T12 / Schematic Diagrams3-49 * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not fieldreplaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these par ts have been replaced in the field will be off frequency at temperature extremes. R0121 0662057A97 100k 1/16WR0131 0662057B46 10.0 MEG OHMS 5% R0132 0662057B10 330k 1/16W 5% R0151 0662057A82 24K 1/16W 5% R0152 0662057A82 24K...
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3-50Controller T12 / Schematic Diagrams
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Professional Radio GM Series Controller Service Information Issue: August 2002
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ii Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described...
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iii Table of Contents Chapter 1 THEORY OF OPERATION 1.0 Controller Circuits ................................................................................................ 1-1 1.1 Overview......................................................................................................... 1-1 1.2 General ........................................................................................................... 1-1 1.3 Radio Power Distribution...
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iv Chapter 2 TROUBLESHOOTING CHARTS 1.0 Controller ............................................................................................................ 2-1 Chapter 3 CONTROLLER SCHEMATICS 1.0 Allocation of Schematics and Circuit Boards ....................................................... 3-1 2.0 T2 Controller ....................................................................................................... 3-3 3.0 T5 Controller...
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Chapter 1 THEORY OF OPERATION 1.0 Controller Circuits 1.1 Overview This section provides a detailed theory of operation for the radio and its components. The main radio is a single board design, consisting of the transmitter, receiver, and controller circuits. The main board is designed to accept one additional option board. This may provide functions such as secure voice/data, voice storage or signalling decoder. A controlhead is either mounted directly or connected by an extension cable. The...
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1-2THEORY OF OPERATION Figure 1-1 Controller Block Diagram 1.3 Radio Power Distribution The DC power distribution throughout the radio board is shown in Figure 2-1. Voltage regulation for the controller is provided by 4 separate devices; U0651 (MC78M05) +5V, U0641 (LM2941) +9.3V, U0611 (LM2941) SWB+ limited to 16.5V and VSTBY 5V (a combination of R0621 and VR0621). An additional 5V regulator is located on the RF section. The DC voltage applied to connector J0601 supplies power directly to the...