Motorola Gm Series Detailed 6864115b62 B Manual
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Controlhead GM380/1280 - PCB 8486178B03/B04 / Schematics4-15 P6 SW0924P7 SW0925DOWN P3 MENU 1 SW09032 SW0904 SW0910 7 SW09138 SW0914 SW0901 SW0906 1V/1V 1V/2V 1V/3V3V/2V 3V/3V SW0917 SW0911 SW0912 KEYPAD D 0V/0V 3V/4V 2V/0V SW09180 SW0919 1V/4V3V/0V RIGHT12 P2 LEFT 4 SW09085 SW09092V/1V 2V/2V4V/0V 4V/1V 4V/2V 4V/3V 4V/4V 789 0 * P1 3 4 P2 3 SW0905P4 P1 P3 P4 EXIT 6 9 SW0915 SW0902 SW0907SW0916 SW0921 SW0922 * 2V/3V 2V/4V UP5 0V/1V 0V/2V 0V/3V 0V/4V1V/0V 6 # P5 P6 P73V/1V # SW0920 P5 SW0923 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S09241 P1 2 P2 3 P3 S09331 2SWITCH130K R0915 130K NU R0935 P6 6 P7 7P8 8 S0917 SWITCHP1 1 P2 2 P3 3P4 4P5 55 P5 6 P6 7 P7 8 P8SWITCH S09071 P1 2 P2 3 P3 4 P4 P3 3P4 4P5 5 P6 6 P7 7P8 8 S0903 SWITCHP1 1 P2 2 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 8 P8 SWITCH S09111 P1 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 P7 7P8 8 SWITCH S0904 P1 1 P2 2 P3 3P4 4P5 5 P6 6S0905 SWITCH R0933 22K 1 2 R0914 43K SWITCHS0932R0934 43K R0931 51K NUR0903 R0902 22K 13K R0912 13K R0932 13K S0931 SWITCH 1 2 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S09121 P1 43K R0904 R0905 130K R0911 51K 51K R0901 R0913 22K P2 2 P3 3P4 4P5 5 P6 6 P7 7P8 8 8 P8 S0910 SWITCHP1 1 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 P7 7P8 8SWITCH S0915P1 1 P2 2 P3 3P4 4P5 5 P6 6 5 P5 6 P6 7 P7 8 P8S0920 SWITCH S09251 P1 2 P2 3 P3 4 P46 P6 P7 7 8 P8SWITCH SWITCH 1 P1 2 P2 3 P3 4 P4 5 P5 P4 4P5 5 P6 6 P7 7P8 8S0916 S0906 SWITCHP1 1 P2 2 P3 3 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S09231 P1 2 P2 P1 1 P2 2 P3 3P4 4P5 5 P6 6 P7 7P8 8 8 P8 S0909 SWITCH1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 P6 6 P7 7P8 8SWITCH S0914 S0919 SWITCHP1 1 P2 2 P3 3P4 4P5 5 SWITCHS09351 2 SWITCH1 2 6 P6 7 P7 8 P8 S0934 1 P1 2 P2 3 P3 4 P4 5 P5 P4 4P5 5 P6 6 P7 7P8 8SWITCH S0922 S0921 SWITCH P1 1 P2 2 P3 3 P3 3P4 4P5 5 P6 6 P7 7P8 8S0901 SWITCHP1 1 P2 2 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S0902 P5 6 P6 7 P7 8 P8 1 P1 2 P2 3 P3 4 P4 5 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S0908 SWITCH S09131 P1 2 P2 3 P3 2 P3 3P4 4P5 5 P6 6 P7 7P8 8S0918 SWITCHP1 1 P2 5VINT_KP_ROW INT_KP_COL 5V5V KEYPAD_ID Controlhead GM380/1280 - Schematic Sheet 2 of 4 ZWG0130371-A
4-16Controlhead GM380/1280 - PCB 8486178B03/B04 / Schematics 0.1uF C0966 NU NUQ0992 10K R0962yellow D0992 NUred D0991 D0956D0987 D0955 NUD0967 R0946 68KC0999 C0998 2.2uF C0994 2.2uF10K 2.2uF10KR0999 10KR0998 0.1uF R0994 C0941D0969 D0957 D0945 NU D0979 D09722.2uFC0963 68K R0966 NU 10K R095310KR0951D0983 green D0993 10 R0955 0.1uF C0945 R0954 NU 10K 3.3K R0943 10K R0941 Q0943D0961 D0949 D0980 NU10K R097310K NUR0971 NU33K R0964 NU D0982 D0968270 R0991 NU270 R0992 NU 10 R0958 D0978 D0966 NUR0968 4.7K NUR0970 NU NU 100K NUR0978 10 10 R0976 D0960 NU D0948 NU R0957 10 NU D0944 D0954 NU D0942 NUD0989 100K R0949 NUD0947 2.2uF C0944R0993 270 Q0993 100K R0997 100K R0996 R0995 NU100K NU D0976 D0964 2.2uF NU C0964Q0964 NU 10K NU 33K NU R0952 NU R0944 R0942 10K 4 Q0944 NU MC33072U0942-1 NU2 3 18 Q0942 NU10R0977 R0975 10 NUC0965 0.1uF D0958 D0946 NU D0970 NU470pFC0991 NU 0.1uF NU C0942D0975 D0963 D0951 D0985 NUD0973 R0956 10 0.1uF NUNU C0946NUD0990 D0988NU D0943 NUD0952 D0986 D0981 68K R0945 C0943 2.2uF NU NU D0974NU D0962 NUD0950 NU D0984 R0974 10K10K R0972 NU 3.3KR0963 R0961 10K 78 4 Q0963 MC33072 U0941-26 5 Q0961 U0941-1 MC330722 3 18 4 Q0941 NU6 5 78 4 NU U0942-2 MC33072Q0962 4.7K R0967 100K R0969 Q0991 R0965 68K D0971 D0959 D0977 D0965 D0953 D0941 4.7K NU R0947 4.7K R0948 100K NU BL_KP_GREEN BL_KP_REDBL_LCD_GREEN BL_LCD_REDFLT_A+ FLT_A+ FLT_A+LED_RED LED_YELLOW LED_GREENFLT_A+ R0950BL_A_GREEN FLT_A+ BL_K_GREEN BL_A_RED FLT_A+ BL_K_RED FLT_A+ FLT_A+ FLT_A+ ZWG0130372-C Controlhead GM380/1280 - Schematic Sheet 3 of 4 ZWG0130372-C
Controlhead GM380/1280 - PCB 8486178B03/B04 / Schematics4-17 J0821-10 E (RD) NU C0806 470pF 470pF C0807100pF NU C0824 470pF C0816R0815 10 100pFC0827 NU C0826 100pF NU C0815 470pFC0813 C0811 470pF 470pF R0816 270 R0817 13K R0812 13K ANALOG_INPUT_2 J0811-10 NCNC 470pF C0812 R0814 NU 22 100pF C0836 82pF C0808 NU22 R0813 J0821-3 Backlight_Anode Red J0821-4 Temp_Sense J0821-2 Backlight_Anode Green 82pF C0805NC NC R0833 100R0832 100 J0821-21 Voltage_Sense 2 J0821-20 GND J0801-6 J0801-5 J0801-7 J0821-24 GND 0 R0823 51K R0811 6 HANDSET_AUDIO J0811-8 PTT_IRDECODER J0811-6 BUS+ J0811-7 J0821-13 D1 NU J0821-12 D0 R0822 0 C0804 470pF NU NUC0835 100pF 100pF C0834 C0833 100pF NU C0832 NU J0801-8 100pF NU NUC0840 100pF 100pF C0838 C0837 100pF NU J0821-26 GND HOOK J0811-3 GROUND J0811-45V J0811-2 FLT_A+ J0811-1 TP0821 Voltage_SenseJ0821-15 D3 VR0811 33V NU ANALOG_INPUT_3 J0811-9 100pFC0823 NU VR0814 20V 20V 100 VR0813 NU R0838100pFC0825 J0801-14 J0801-2 J0801-1 J0801-30 NU J0821-25 GND R0824 J0821-14 D2 J0821-23 Backlight_Cathode Green J0821-1 GND J0821-9 R/W (WR) J0821-7 CS2 J0821-8 A0 (Command) J0821-6 CS1 C0831 100pF NU NU NU 470pF C0810 NU470pF C0819 470pF C0818 C0830 100pF NU 7 J0821-22 Backlight_Cathode Red 0 1 3 4 5 J0801-9 J0821-11 VDD J0801-12 NU P0801-1 NU P0801-2 J0801-13 J0821-19 D7 470pFC0802 NU C0803 470pFR0835 100 82pF C081751K R0818 100 J0821-18 D6 R0827 J0821-17 D5 C0829 NU 100pF NU100pF C0828 R0840 100 MIC J0811-5 R0837 100R0836 100 R0834 100 100 R0831R0828 100 J0801-4R0826 100 R0825 100 J0821-16 D4 R0821 0 J0821-5 Reset VR0812 5.6V J0801-10EXT_KP_ROW MIC FLT_A+ EXT_KP_COL HOOK J0801-11LCD_CS RESET LCD_DATA_(0:7) VOLTAGE_SENSETEMP_SENSEBL_A_GREEN BL_A_RED BL_K_GREENBL_K_REDLCD_A0 LCD_RW_WR LCD_E_RD 5V 5V PTT_IRDEC HANDSET_AUDIO BUS+ 5V SCI_TX 5V_SOURCE HANDSET_AUDIO BUS+ MIC FLT_A+ ON_OFF_CONTROL5V 5V J0801 CONTROL HEAD CONNECTORJ0821 LCD MODULE CONNECTOR TP0804 Temp_Sense 10 GM300 7 8 9 MICROPHONE CONNECTORJ0811 WARIS 1 4 5 623 Shown from Front Side Controlhead GM380/1280 - Schematic Sheet 4 of 4 ZWG0130373-B
4-18Controlhead GM380/1280 - PCB 8486178B03/B04 / Schematics4.1 Controlhead PCB 8486178B03/B04 Parts List * 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 parts have been replaced in the field will be off frequency at temperature extremes. Circuit RefMotorola Part NoDescriptionC0803 2113741F17 470pF 50V C0804 2113741F17 470pF 50V C0805 2113740F49 82pF 5% 50V C0807 2113741F17 470pF 50V C0811 2113741F17 470pF 50V C0812 2113741F17 470pF 50V C0813 2113741F17 470pF 50V C0815 2113741F17 470pF 50V C0816 2113741F17 470pF 50V C0817 2113740F49 82pF 5% 50V C0851 2113741F49 10nF 50V C0856 2311049A40 TANT CP 2.2uF 10% 10V C0861 2113743E20 100nF 16V C0862 2311049A45 TANT CP 10uF 10% 35V C0863 2113743E07 22nF 16V C0864 2311049A99 TANT CP 47uF 20% 10V C0865 2113743E20 100nF 16V C0866 2113743E20 100nF 16V C0870 2113741F49 10nF 50V C0871 2311049A42 TANT CP 3.3uF 10% 6V C0873 2113743E20 100nF 16V C0941 2113743E20 100nF 16V C0943 2311049A40 TANT CP 2.2uF 10% 10V C0945 2113743E20 100nF 16V C0963 2311049A40 TANT CP 2.2uF 10% 10V C0965 2113743E20 100nF 16V C0994 2311049A40 TANT CP 2.2uF 10% 10V C0998 2311049A40 TANT CP 2.2uF 10% 10V C0999 2311049A40 TANT CP 2.2uF 10% 10V D0852 4813833C02 DUAL SOT MMBD6100 D0855 4813833C02 DUAL SOT MMBD6100 D0861 4813833C02 DUAL SOT MMBD6100 D0871 4813833C02 DUAL SOT MMBD6100 D0872 4880236E05 DIODECHIP SCHOTTKY D0941 4886171B04 LED GREEN D0943 4886171B04 LED GREEN D0945 4886171B04 LED GREEN D0947 4886171B04 LED GREEN D0949 4886171B04 LED GREEN D0951 4886171B04 LED GREEN D0953 4886171B04 LED GREEN D0955 4886171B04 LED GREEN D0957 4886171B04 LED GREEN D0959 4886171B04 LED GREEN D0961 4886171B04 LED GREEN D0963 4886171B04 LED GREEN D0965 4886171B04 LED GREEN D0967 4886171B04 LED GREEND0969 4886171B04 LED GREEN D0971 4886171B04 LED GREEN D0973 4886171B04 LED GREEN D0975 4886171B04 LED GREEN D0977 4886171B04 LED GREEN D0979 4886171B04 LED GREEN D0981 4886171B04 LED GREEN D0983 4886171B04 LED GREEN D0985 4886171B04 LED GREEN D0987 4886171B04 LED GREEN D0989 4886171B04 LED GREEN D0991 4886171B01 LED RED D0992 4886171B03 LED YELLOW D0993 4886171B04 LED GREEN J0801 0902636Y02 CONN FLEX 12 PIN J0811 2864287B01 CONN TELCO 10 PIN JACK J0821 0986197B01 CONN ZIF HOR 24PIN Q0851 4805921T02 DUAL ROHM FMC2 RH Q0852 4805921T02 DUAL ROHM FMC2 RH Q0853 4880048M01 NPN DIG 47k/47k Q0866 4880048M01 NPN DIG 47k/47k Q0871 4880048M01 NPN DIG 47k/47k Q0872 4880048M01 NPN DIG 47k/47k Q0941 4813822A08 PNP 25V 5A MJD210T4 Q0943 4813824A10 NPN 40V .2A B=50-150 Q0961 4813822A08 PNP 25V 5A MJD210T4 Q0963 4813824A10 NPN 40V .2A B=50-150 Q0991 4813824A10 NPN 40V .2A B=50-150 Q0992 4813824A10 NPN 40V .2A B=50-150 Q0993 4813824A10 NPN 40V .2A B=50-150 R0811 0662057A90 51k 1/16W 5% R0812 0662057A76 13k 1/16W 5% R0813 0662057A09 22 1/16W 5% R0814 0662057A09 22 1/16W 5% R0815 0662057A01 10 1/16W 5% R0816 0662057A35 270 1/16W 5% R0817 0662057A76 13k 1/16W 5% R0818 0662057A90 51k 1/16W 5% R0821 0662057B47 0 1/16W R0823 0662057B47 0 1/16W R0825 0662057A25 100 1/16W 5% R0826 0662057A25 100 1/16W 5% R0827 0662057A25 100 1/16W 5% R0828 0662057A25 100 1/16W 5% R0831 0662057A25 100 1/16W 5% R0832 0662057A25 100 1/16W 5% R0833 0662057A25 100 1/16W 5% R0834 0662057A25 100 1/16W 5% R0835 0662057A25 100 1/16W 5% R0836 0662057A25 100 1/16W 5% Circuit RefMotorola Part NoDescription R0837 0662057A25 100 1/16W 5% R0838 0662057A25 100 1/16W 5% R0840 0662057A25 100 1/16W 5% R0852 0662057A49 1k 1/16W 5% R0853 0662057A73 10k 1/16W 5% R0854 1805911V02 POT VOL (Part of Hardware Kit) R0855 0662057A76 13K 1/16W 5% R0856 0662057A65 4k7 1/16W 5% R0861 0662057A01 10 1/16W 5% R0862 0662057A01 10 1/16W 5% R0863 0662057A97 100k 1/16W R0866 0662057A73 10k 1/16W 5% R0870 0662057A73 10k 1/16W 5% R0872 0662057B47 0 1/16W R0873 0662057B22 1M 1/16W 5% R0874 0662057A25 100 1/16W 5% R0875 0662057A89 47k 1/16W 5% R0876 0662057B47 0 1/16W R0878 0662057B47 0 1/16W R0880 0662057A57 2k2 1/16W 5% R0881 0662057A73 10k 1/16W 5% R0882 0662057A89 47k 1/16W 5% R0883 0662057A73 10k 1/16W 5% R0884 0662057A73 10k 1/16W 5% R0885 0662057A73 10k 1/16W 5% R0886 0662057A89 47k 1/16W 5% R0887 0662057A73 10k 1/16W 5% R0888 0662057A73 10k 1/16W 5% R0889 0662057A85 33k 1/16W 5% R0890 0662057A35 270 1/16W 5% R0901 0662057A90 51k 1/16W 5% R0902 0662057A76 13k 1/16W 5% R0903 0662057A81 22k 1/16W 5% R0904 0662057A88 43k 1/16W 5% R0905 0662057B01 130K 1/16W 5% R0911 0662057A90 51k 1/16W 5% R0912 0662057A76 13k 1/16W 5% R0913 0662057A81 22k 1/16W 5% R0914 0662057A88 43k 1/16W 5% R0915 0662057B01 130K 1/16W 5% R0931 0662057A90 51k 1/16W 5% R0932 0662057A76 13k 1/16W 5% R0933 0662057A81 22k 1/16W 5% R0941 0662057A73 10k 1/16W 5% R0943 0662057A61 3.3k 1/16W 5% R0945 0662057A93 68k 1/16W 5% R0947 0662057A65 4k7 1/16W 5% R0949 0662057A97 100k 1/16W R0951 0662057A73 10k 1/16W 5% R0953 0662057A73 10k 1/16W 5% Circuit RefMotorola Part NoDescription R0955 0660076A01 10 5 1/8 R0957 0660076A01 10 5 1/8 R0961 0662057A73 10k 1/16W 5% R0963 0662057A61 3.3k 1/16W 5% R0965 0662057A93 68k 1/16W 5% R0967 0662057A65 4k7 1/16W 5% R0969 0662057A97 100k 1/16W R0971 0662057A73 10k 1/16W 5% R0973 0662057A73 10k 1/16W 5% R0975 0660076A01 10 5 1/8 R0977 0660076A01 10 5 1/8 R0991 0660076A35 270 5 1/8 R0992 0660076A35 270 5 1/8 R0993 0660076A35 270 5 1/8 R0994 0662057A73 10k 1/16W 5% R0995 0662057A97 100k 1/16W R0996 0662057A97 100k 1/16W R0997 0662057A97 100k 1/16W R0998 0662057A73 10k 1/16W 5% R0999 0662057A73 10k 1/16W 5% U0861 5105469E65 IC VLTG REGLTR LP2951C *U0871 5113802A32 68HC11 W/SCI SPI A/D U0873 4886061B01 CER RESONATOR 8MHZ U0941 5113818A03 IC HIGH PERFORMANCE SI VR0812 4813830A15 DIODE 5.6V 5% 225mW VR0813 4805656W09 ZENER QUAD MMQA20VT1 VR0814 4805656W09 ZENER QUAD MMQA20VT1 VR0851 4813830A15 DIODE 5.6V 5% 225mW VR0855 4813830A15 DIODE 5.6V 5% 225mW Circuit RefMotorola Par t NoDescription
Professional Radio GM Series Controlhead Service Information Issue: August 2002
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 in this manual may not be copied or reproduced 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 the normal non-exclusive royalty- free license to use that arises by operation of law in the sale of a product.
iii Table of Contents Chapter 1 MODEL OVERVIEW 1.0 GM140/GM340/GM640 Models ........................................................................... 1-1 2.0 GM160/GM360/GM660 Models ........................................................................... 1-1 3.0 GM380/GM1280 Models ...................................................................................... 1-2 Chapter 2 THEORY OF OPERATION 1.0 Introduction .......................................................................................................... 2-1 2.0 Controlhead Model for GM140, GM340 and GM640 ........................................... 2-1 2.1 Power Supplies............................................................................................... 2-1 2.2 Power On / Off ................................................................................................ 2-1 2.3 Microprocessor Circuit .................................................................................... 2-1 2.4 SBEP Serial Interface ..................................................................................... 2-1 2.5 Keypad Keys .................................................................................................. 2-1 2.6 Status LED and Back Light Circuit.................................................................. 2-3 2.7 Microphone Connector Signals ...................................................................... 2-3 2.8 Speaker .......................................................................................................... 2-4 2.9 Electrostatic Transient Protection ................................................................... 2-4 3.0 Controlhead Model for GM160, GM360 and GM660 ........................................... 2-4 3.1 Power Supplies............................................................................................... 2-4 3.2 Power On / Off ................................................................................................ 2-4 3.3 Microprocessor Circuit .................................................................................... 2-5 3.4 SBEP Serial Interface ..................................................................................... 2-5 3.5 Keypad Keys .................................................................................................. 2-6 3.6 Status LED and Back Light Circuit.................................................................. 2-6 3.7 Liquid Crystal Display (LCD) .......................................................................... 2-6 3.8 Microphone Connector Signals ...................................................................... 2-6 3.9 Speaker .......................................................................................................... 2-7 3.10 Electrostatic Transient Protection ................................................................... 2-8 4.0 Controlhead Model for GM380 and GM1280 ....................................................... 2-8 4.1 Power Supplies............................................................................................... 2-8 4.2 Voltage Regulator Circuit ................................................................................ 2-8 4.3 Power On / Off ................................................................................................ 2-9 4.4 Microprocessor Circuit .................................................................................... 2-9 4.5 SBEP Serial Interface ................................................................................... 2-10 4.6 Keypad Keys ................................................................................................ 2-10 4.7 Status LED and Back Light Circuit................................................................ 2-10 4.8 Liquid Crystal Display (LCD) ........................................................................ 2-11 4.9 Microphone Connector Signals .................................................................... 2-11 4.10 Speaker ........................................................................................................ 2-12 4.11 Electrostatic Transient Protection ................................................................. 2-12
iv Chapter 3 TROUBLESHOOTING CHARTS 1.0 Troubleshooting Chart for Controlhead GM140/340/640 .................................... 3-1 1.1 On/Off ................................................................................................................. 3-1 1.2 Microprocessor ................................................................................................... 3-2 2.0 Troubleshooting Chart for Controlhead GM160/360/660 .................................... 3-3 2.1 On/Off ................................................................................................................. 3-3 2.2 Microprocessor ................................................................................................... 3-4 2.3 Display ................................................................................................................ 3-5 2.4 Backlight ............................................................................................................. 3-6 3.0 Troubleshooting Chart for Controlhead GM380/1280 ......................................... 3-7 3.1 On/Off ................................................................................................................. 3-7 3.2 Microprocessor ................................................................................................... 3-8 3.3 Microprocessor ................................................................................................... 3-9 3.4 Display .............................................................................................................. 3-10 3.5 Keypad Backlight .............................................................................................. 3-11 3.6 Display Backlight .............................................................................................. 3-12 Chapter 4 CONTROLHEAD PCB/SCHEMATICS/PARTS LISTS 1.0 Allocation of Schematics and Circuit Boards ....................................................... 4-1 2.0 Controlhead GM140/340/640 - PCB 8486146B07 / Schematics ......................... 4-3 2.1 Controlhead PCB 8486146B07 - Parts List ......................................................... 4-6 3.0 Controlhead GM160/360/660 - PCB 8486155B06 / Schematics ........................ 4-7 3.1 Controlhead PCB 8486155B06 - Parts List ...................................................... 4-12 4.0 Controlhead GM380/1280 - PCB 8486178B03/04 / Schematics ....................... 4-13 4.1 Controlhead PCB 8486178B03/04 - Parts List .................................................. 4-18
Chapter 1 OVERVIEW 1.0 GM140/GM340/GM640 Models (GCN6112_) The Controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio and several indicator Light Emitting Diodes (LED) to inform the user about the radio status. To control the LED’s and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor. 2.0 GM160/GM360/GM660 Models (GCN6114-GM160 / GCN6120-GM360/660) The Controlhead contains the internal speaker, the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a 14 character Liquid Crystal Display (LCD) for alpha - numerical information e.g. channel number or call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor
1-2overview 3.0 GM380/GM1280 Models (GCN6121_) The Controlhead contains the on/off/volume knob, the microphone connector, several buttons to operate the radio, several indicator Light Emitting Diodes (LED) to inform the user about the radio status, and a Liquid Crystal Display (LCD) with 21 pre - defined symbols and a 32*96 dot matrix for graphical or alpha - numerical information e.g. channel number, select code, call address name. To control the LED’s and the LCD, and to communicate with the host radio the control head uses the Motorola 68HC11K4 microprocessor. 4.0 Databox Models (GCN6116_) T he Dat abox r ad ios a re tr a nsce iv er m ode ls that have a da tabox r a d io blank he ad (a non-functional plastic co ver) in stead of a c o n tr o l h e ad. The se m ode ls a re p la n ned f or s p e cia l a p plic at ions to be u se d m ain ly in c o njun ction w ith a rad io m od em.