Page 1: ... change to 1 Onp and C2 SYM PARTNO ACTION DESCRIPTION batteries of similar size C2 2360561H19 delete TO ASSURE MAXIMUM BATTERY LIFE and gain maximum usage duty cycle and these higher capacity batteries 2360561M85 3300 product life RAPID CHARGE ONLY with Although compatible with existing product chargers the use of continuous slow or 3 On page 7 SCHEMATIC DIAGRAM delete C1 and C2 and change the val...
Page 2: ...y type add NTN7014A B In Table 2 Charging Rates and in the first box under battery type add NTN7014A D Add the following to the WARNING Motorola recommends proper recycling of ALL rechargeable batteries 7 On page 1 under 3 DESCRIPTION after nickel cadmium in the safety instruction WARNING section insert and nickel metal hydride NI MH 8 On page 2 under 5 IN CASE OF TROUBLE complete the following ch...
Page 3: ... it this defeats the point of capturing this at high resolution If something is incorrect here or unreadable please reach out I likely have the original lossless compressed images In the final PDF that s color or grayscale will be JPEG 2000 format with highest quality selected B W images will be compressed using CCITT Group 4 This is quite close to the source material but there may be some artifac...
Page 4: ...EMPERATURE RANGE 0 C 50 C RAPID CHARGE TEMPERATURE WINDOW 10 C 40 C Instruction Manual 68P81106C65 00 MA MOTOROLA 1 INTRODUCTION The Model NTN4734A 115Vac and NTN4786A 220Vac Single Unit Rapid Charge Battery Chargers are accessory items for the SABER Series Handie Talkie Portable Radios using rechargeable nickel cadmium batteries The chargers are approved for use with the following rapid charge ba...
Page 5: ...ve bridge rectifier CR1 CR4 B is applied to the display board LEDs to charging circuit transistors 2 4 OPERATION After a period of use a battery normally requires ap proximately one hour of rapid charging The radio should be turned off while attached to a battery being recharged Place the charger in operation as follows a Make sure that the line voltage selector fuse F1 and receptacle is placed in...
Page 6: ...pin 32 Q17 and Q15 pull charging current from transistor Q1 through parallel resistors R47 and R60 3 Q1 Q3 and Q15 and to a 5 volt regulator U1 which provides power to the microcomputer U3 All of the timing monitoring and sensing of the circuits is performed by the microcomputer U3 Upon power up with no battery inserted the microcomputer performs a self check of its read only memory ROM random ac ...
Page 7: ... VOLTAGE OF THE BATTERY 3 VOLTAGES AT PIN DESIGNATED WILL VARY WITH THE TEMPERATURE OF THE BATTERY 4 c Reset Circuit Integrated circuit U5 is a watchdog timer At least once every second a positive signal from U3 pin 31 is received at U5 pin 2 This signal keeps Q18 from reset ting the microcomputer If a problem occurs in the micro computer such as the microcomputer s internal timer ceasing to funct...
Page 8: ... FROM COMPONENT SIDE J3 LOGIC BOARD CONTACT BOARD IARGE R DCKET OL CEPF I7311 0 CIRCUIT BOARD DETAIL TO DISPLAY BOARD TO TRANSFORMER TI aN GRN GRN VIEWED FROM COMPONENT SIDE J3 LOGIC BOARD CONTACT BOARD IARGE R DCKET OL CEPF I7311 0 CIRCUIT BOARD DETAIL ...
Page 9: ...38 1 5M R44 0611009C97 100k R45 0611009C49 1k R46 0611009C73 10k 1 U1 2 1k 1 6 ELECTRICAL PARTS LIST Electrical Parts List TPLF 3447 A R47 1705261K15 12 10 5W R48 061 1 009C49 tk Not Used R49 50 R51 0611009C49 ik R52 Not Used R53 1705530L07 100 10 2W R54 55 0611009C73 10k R56 0611009C49 1k R57 Not Used R58 0611009C73 10k R59 0611009C97 100k R60 1705261K15 12 10 5W VARISTOR RV1 0605220M01 35V TRANS...
Page 10: ... C24 4 6 P3 GRN R34 1k B3CBIIOGCIG A SCHEMATIC DIAGRAM 35 7K NICHARGING 2 27 28 30 37 38 33 3 3 BY 6 Z LOGIC BOARD R47 Rit GRNI BLU T1 1 2 6 8k OS I p2 240v i BRN 1 Fe yt FI 220V 400mA BLK COMMON BATTERY BEING CHARGED R60 R48 2 1k wt SA B CRI A CR3 PI RVI RED Bt 1 00 CR2 CR4 TioooTloooTiooo Ce c5 50 T REG B R4 2R53 C3 cls BATT 10k Q3 100 REG 3 fk VRI Bt 6 2 GRN u REG 5v foc lowe Le B REG RI7 RIG C...
Page 11: ... Refer to Electrical Parts List for part number and description EXPLODED VIEW PARTS LIST AND DIAGRAM LB 19 11 10 13 14 16 18 20 TPLF 3448 A Electrical Parts List ITEM MOTOROLA NO PART NO DESCRIPTION See Note CORD Line See Note CONNECTOR AC 0305199R02 SCREW Cutting Phil Pan Hd 10 16 x 625 4 req d 7505870R01 FOOT 4 req d 1505556Q01 BASE See Note TRANSFORMER 71 0305199R01 SCREW Cutting Phil Pan Hd 10...
