Motorola_DM -3400_DM-3401_DM-3600_DM-3601_serv2.pdf

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1、 Foreword This manual covers all DM Series Mobiles, unless otherwise specified. This manual provides sufficient information to enable qualified service technicians to troubleshoot and repair DM Series Mobiles to the component level. For details on radio operation or basic troubleshooting, refer to t

2、he applicable manuals available separately. Product Safety and RF Exposure Compliance ATTENTION! This radio is restricted to occupational use only to satisfy ICNIRP/FCC RF energy exposure requirements. Before using this product, read the RF energy awareness information and operating instructions in

3、the Product Safety and RF Exposure booklet enclosed with your radio (Motorola Publication part number 6866537D37) to ensure compliance with RF energy exposure limits. For a list of Motorola-approved antennas, and other accessories, visit the following web site which lists approved accessories: Compu

4、ter 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, i

5、ncluding, but not limited to, 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 in this manual may not be copied, reproduced, modified, reverse-engineered, or dis

6、tributed in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for t

7、he normal non-exclusive license to use that arises by operation of law in the sale of a product. Document Copyrights No duplication or distribution of this document or any portion thereof shall take place without the express written permission of Motorola. No part of this manual may be reproduced, d

8、istributed, or transmitted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of Motorola. Disclaimer The information in this document is carefully examined, and is believed to be entirely reliable. However, no responsibility is assumed for

9、inaccuracies. Furthermore, Motorola reserves the right to make changes to any products herein to improve readability, function, or design. Motorola does not assume any liability arising out of the applications or use of any product or circuit described herein; nor does it cover any license under its

10、 patent rights nor the rights of others. Trademarks MOTOROLA and the Stylized M logo are registered in the U.S. Patent and is similar in function to Motorolas legacy microphone connectors. The multiplexing of these functions is handled by circuitry internal to the radio. The function of each pin is

11、listed in Table 2-1. The MMP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be used as either a device (radio is device) or as a host (radio is host). When configured as a device, the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When con

12、figured as a host, various smart accessories can be used with the radio. See section 1.7 of Controller Service Information section for more information on the USB interface. Table 2-1 Mobile Microphone Port Functions MMP Pin Number MMP Pin NameFunction 1ACC_IDAccessory Identifier 2GPIO_3 / PTTGenera

13、l Purpose I/O or PTT 3SpkrHandset Audio 4GPIO_2 / D-USB D- 5GND (Ground)Ground 6Opt_5V / Vbus5 Volt Supply 7Mic+Mic Input 8GPIO_1 / D+USB D+ 9GPIO_4 / HookGeneral Purpose I/O or Hook 10GPIO_0 / PwrOnGeneral Purpose I/O or Power On Detect Introduction2-3 The ACC_ID interface is used by accessories to

14、 provide the radio with information needed to configure the interface for that accessory. See section 1.6 of Controller Service Information section for more information on the ACC_ID interface. Note: The USB ports are designed to support Motorola accessories and approved applications only and will n

15、ot support third party “Plug-n-Play” USB devices. 1.1.7Speaker The control head contains a speaker for the receive audio. The receive audio signal from the audio PA (located inside the radio) is fed via connector J6001, pins 10 and 11 to the speaker connector. The speaker is connected to the speaker

16、 connector P6004. The control head speaker can be disconnected if an external speaker, connected on the MAP is used. For more details on the audio PA and audio routing see section 1.11 of Controller Service Information section. 1.1.8Electrostatic Transient Protection Electrostatic transient protecti

17、on is provided for the sensitive components in the control head by diodes VR6001, VR6002, VR6020, VR6042 VR6043, and VR6045. The diodes limit any transient voltages to tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI) protection. 1.1.9Volume Encoder The volume co

18、ntrol is facilitated by the digital encoder S6010. Pins 1 and 3 of S6010 are connected to the radio OMAP processor (U1000) via J6001, pins 13 and 14. There are active pull-ups internal to the OMAP. When S6010 is rotated, active low pulses are generated on both pins in off-phase pattern. The phase of

19、 the two signals determines the direction of the rotation. The number of the pulses determines the magnitude of the rotation. 1.2Display Control Head The Display Control Head contains the internal speaker, the on/off switch, the volume knob, the microphone connector, several switches to operate the

20、radio, several indicator LEDs to inform the user about the radio status, and a dot matrix liquid crystal display (LCD) for alphanumerical information. The OMAP processor (U1000) inside the radio controls the LEDs and the LCD via serial data bus. 1.2.1Power Supply The power supply to the control head

21、 is taken from the radios 9V3 voltage via connector J6001, pin 30. The voltage 9V3 is at 9.3 V and is used for the LEDs, the backlight LEDs, and is regulated to 2.2 V by U6000. The regulated 2.2 V supplies power to the logic level shifters, shift registers and LCD module. 2-4Introduction 1.2.2Serial

22、 Peripheral Interface (SPI) The radio communicates with the control head via its SPI bus. Three lines are connected to the shift register U6002: CLOCK (J6001, pin 24), DATA (J6001, pin 25), and LED_CS (J6001, pin 23). CLOCK and DATA are also connected to the LCD module via J6000. Additionally, three

23、 more lines are connected from the radio to LCD module: DISPLAY_CS (J6001, pin 26), D/C (J6001, pin 27) and RESET (J6001, pin 28). All 6 lines are level translated from 1.8 V to 2.2 V through U6003. The radio sends data to the shift registers by first asserting the appropriate chip select and the da

24、ta is loaded to the appropriate registers. Data is latched into the shift registers when the CS transitions from low to high. 1.2.3Switches This control head supports 11 switches to control channel up/down, menu navigation, and four programmable switches P1 through P4. The switches are connected to

25、the OMAP inside the radio via a 4 row by 3 column scanning matrix with only four used positions. Each of the 3 column output lines is toggled high in sequence and the 4 row input lines are monitored to detect if a button has been pressed. The OMAP processor then decodes which switch was pressed usin

26、g the appropriate column and row stimulus and response information. The momentary on-off switch is a dedicated function which is not part of the keypad matrix network. ON_OFF_SW signal is connected to the host radio via J6001, pin 22. When this signal is momentary grounded, on/off switch on the host

27、 radio is triggered. 1.2.4LCD Display The 132x34 full dot matrix LCD is controlled by the LCD controller/driver chip on the LCD module. The radio communicates with the LCD module via CLOCK (J6001, pin 24), DATA (J6001, pin 25), DISPLAY_CS (J6001, pin 26), D/C (J6001, pin 27) and RESET (J6001, pin 28

28、). The radio sends data to the LCD by first asserting chip select low and the data is loaded to the appropriate registers. Data is latched into the shift registers when the CS transitions from low to high. U6003 on the control head board is used to provide level shifting from the 1.8 V radio logic l

29、evel to the 2.2 V LCD logic level. 1.2.5Status LEDs and Backlight Circuit All indicator LEDs (red, yellow and green) and icon LEDs are driven by current sources. LEDs on or off are set by the radio sending a data message to the control head shift register U6002 via the SPI bus. The control head shif

30、t register U6002 determines the LED state from the received data and switches the LEDs on or off via Q6004, Q6005, and Q6007. Backlighting for the keys is provided by 18 LEDs driven from a constant current circuit Q6014. The backlighting can be either on or off controlled by a constant current circu

31、it (Q6008, U6001 and associated parts). There are 4 levels of backlight: off, low, medium and high, which are controlled by two outputs from the shift register (U6002, pins 3 and 4). The current is controlled by transistor Q6008. The Op Amp U6001 monitors the current by measuring the voltage drop ac

32、ross R6019, R6020 and adjusting the bias of Q6008 to achieve the required level as set by the combined shift register outputs. The total current is distributed among all the LEDs. Resistors R6037,R6040, R6041 and R6042 provide compensation to the component variation between LEDs. They ensure the eve

33、n brightness on the control head. Introduction2-5 1.2.6Mobile Microphone Port (MMP) Interface The Mobile Microphone Port (MMP) is a newly defined Motorola accessory port that contains audio, digital I/O, serial interfaces, and accessory supply lines; and is similar in function to Motorolas legacy mi

34、crophone connectors. The multiplexing of these functions is handled by circuitry internal to the radio. The function of each pin is listed in Table 2-2. The MMP includes 2 serial interfaces: an USB port and an ACC_ID interface. The USB port can be used as either a device (radio is device) or as a ho

35、st (radio is host). When configured as a device, the radio can be programmed or tuned using MOTOTRBO CPS or Tuner software. When configured as a host, various smart accessories can be used with the radio. See section 1.7 of Controller Service Information section for more information on the USB inter

36、face. The ACC_ID interface is used by accessories to provide the radio with information needed to configure the interface for that accessory. See section 1.6 of Controller Service Information section for more information on the ACC_ID interface. Note: The USB ports are designed to support Motorola a

37、ccessories and approved applications only and will not support third party “Plug-n-Play” USB devices. 1.2.7Speaker The control head contains a speaker for the receive audio. The receive audio signal from the audio PA (located inside the radio) is fed via connector J6001, pins 10 and 11 to the speake

38、r connector. The speaker is connected to the speaker connector P6004. The control head speaker can be disconnected if an external speaker, connected on the MAP, is used. For more details on the audio PA and audio routing see section 1.11 of Controller Service Information section. Table 2-2 Mobile Mi

39、crophone Port Functions MMP Pin Number MMP Pin NameFunction 1ACC_IDAccessory Identifier 2GPIO_3 / PTTGeneral Purpose I/O or PTT 3SpkrHandset Audio 4GPIO_2 / D-USB D- 5GND (Ground)Ground 6Opt_5V / Vbus5 Volt Supply 7Mic+Mic Input 8GPIO_1 / D+USB D+ 9GPIO_4 / HookGeneral Purpose I/O or Hook 10GPIO_0 /

40、 PwrOnGeneral Purpose I/O or Power On Detect 2-6Introduction 1.2.8Electrostatic Transient Protection Electrostatic transient protection is provided for the sensitive components in the control head by diodes VR6001, VR6002, VR6020, VR6042 VR6043, and VR6045. The diodes limit any transient voltages to

41、 tolerable levels. The associated capacitors provide Radio Frequency Interference (RFI) protection. 1.2.9Volume Encoder The volume control is facilitated by the digital encoder S6010. Pins 1 and 3 of S6010 are connected to the radio OMAP processor (U1000) via J6001, pins 13 and 14. There are active

42、pull-ups internal to the OMAP. When S6010 is rotated, active low pulses are generated on both pins in off-phase pattern. The phase of the two signals determines the direction of the rotation. The number of the pulses determines the magnitude of the rotation. 3-1 Section 3 TROUBLESHOOTING CHARTS 1.0N

43、umeric Display Model Control Head Troubleshooting Flow Chart 1.1On/Off Radio cannot be switched on via ON/OFF button. J6001 Pin 22 = 2.45V? Check flex cable, and brick power supply and ignition sense connection. Press and hold ON/OFF button J6001 Pin 22 =0V? Check and clean gold contacts on S6010. Y

44、es Yes No No Check control head with a known functional brick. 3-2Display Model Control Head Troubleshooting Flow Chart 2.0Display Model Control Head Troubleshooting Flow Chart 2.1On/Off Radio cannot be switched on via ON/OFF button. J6001 Pin 22 = 2.45V? Check flex cable, and brick power supply and

45、 ignition sense connection. Press and hold ON/OFF button. J6001 Pin 22 =0V? Check and clean gold contacts on S6010. Yes Yes No No Check control head with a known functional brick. Display Model Control Head Troubleshooting Flow Chart3-3 2.2Display Power Up Alert Tone is OK but display shows nothing.

46、 LCD flex cable inserted and locked down in J6000? Re-insert and lock down LCD flex cable. Replace control head with a known functional unit. Display working? Replace LCD module on original control head. Yes No No Yes Update radio with latest firmware and codeplugs. 3-4Display Model Control Head Tro

47、ubleshooting Flow Chart 2.3Backlight Power Up Alert Tone is OK but Backlight could not be turned on via menu or programmable key (P4). Are U6002 Pin 3, 4 Toggling? Check open or short on U6002 and U6003. Are R6036 Pin 1 or 2 Toggling? Check open or short on U6001 and Q6008. Yes Yes No No Replace R60

48、37, R6040-42 and all backlight LEDs. 4-1 Section 4 CONTROL HEAD PCBS / SCHEMATICS / PARTS LISTS 1.0Allocation of Schematics and Circuit Boards Table 4-1 Numeric Display Control Head Diagrams and Parts List PCB : Numeric Display Control Head 8471214H02 Main Board Top Side 8471214H02 Main Board Bottom

49、 Side Page 4-3 Page 4-3 SCHEMATICS Numeric Display Control Head Schematic DiagramPage 4-4 Parts List 8471214H02Page 4-5 Table 4-2 Display Control Head Diagrams and Parts List PCB : Display Control Head 8415026C08 Main Board Top Side 8415026C08 Main Board Bottom Side Page 4-6 Page 4-6 SCHEMATICS Display Control Head Schematic DiagramPage 4-7 Parts List 8415026C08Page 4-8 4-2Allocation of Schematics and Circuit Boards Notes Numeric Display Control Head - PCB 8471214H02 / Schematics4-3 2.0Numeric Display Control Head - PCB 847121