Programmes After Market Services (PAMS) Technical Documentation HANDSFREE DESKTOP CHARGER – CHH–8P
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P AMENDMENT RECORD SHEET Amendment Number Original 26/97 Date Inserted By Comments Page 2
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Handsfree Desktop Charger CHH–8P Contents HF Desktop Charger CHH–8P General User Interface Features Charging Indication Charge States and Charge Control Instructions for Use Charging the Phone Battery Charging the Extra Battery Deep Discharging of the Extra Battery Handsfree Function Using the Voice Mail The Data Connection Technical Specifications Modes of Operation External/Internal Signals and Connections Functional Description Supply Voltage
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P HF Desktop Charger CHH–8P Related Documentation 9853931 9853930 6E 0200211 6E 0200235 S 0675026 0260218 circuit diagram of DC3 circuit diagram of DC4 layout & foil diagr. DC3 layout & foil diagr. DC4 parts list of DC3 parts list of DC4 exploded view mechanics General The HF desktop charger CHH–8P is for the second generation digital handportable telephones.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P User Interface Features HF desktop charger is designed for charging the handportable phone and the spare battery. It provides also handsfree function when the phone is on the charger. The unit has inbuilt HF speaker and HF microphone but the actual handsfree function is generated in the phone. There are also three operating buttons.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Having been charged up in the rapid charge mode, the battery is kept in full charge using pulsed charging, i.e. switching power alternately on and off at a variable duty cycle and a frequency of a few Hz. The desktop charger is also provided with control logic for spare battery charging, which is allowed when no phone is connected or when the phone is in the pulsed charge mode.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Deep Discharging of the Extra Battery In the interests of best possible battery efficiency, it is recommended that the battery be deep discharged once a week or so. To start the deep discharge function, press once the discharge key at the rear of the charger, whereupon the red indicator showing extra battery charging starts to flash. Once the battery has been discharged, the charger will automatically start charging it.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Technical Specifications Modes of Operation Power off mode: If the unit doesn’t receive power supply to the d.c. connector there isn’t any voltage on the module. Standby mode: The unit receives supply voltage to the d.c. connector. The processor is running but because there isn’t any phone or spare battery on the cradle, the charger is off and the audio functions are inactive.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Phone System Connector X701 Pin: Line: Function: 1 DGND Power supply ground 2 XMIC Microphone signal 3 AGND Analog ground 4 TDA Transmitted data 5 M2BUS Serial bidirection bus 6 HOOK Not used 7 PHFS Not used 8 VC Supply/charging 9 DGND Power supply ground 10 XEAR/HFJWR Earphone signal/CHH–8 power switch 11 DSYNC Data syncronisation 12 RDA Received data 13 BIND Not used 14 VF Not used 15 DCLK Data cl
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Internal System Connector X500/DC3, X700/DC4 Pin: Line: Function: 1, 2 VC Supply/charging 3 +5V 4 PHFS Not used 5 DGND Power supply ground 6 DSYNC Data syncronisation 7 DCLK 8 TDA Transmitted data 9 RDA Received data 10 DGND Power supply ground 11 M2BUS Serial bidirection bus 12, 14 AGND Analog ground 13 XEAR Earphone signal 14 AGND Analog groud 15 XMIC Microphone signal 16 AGND Analog ground 17, 18
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Supply Voltages and Power Consumption on the Connectors of CHH–8 Symbol: Description: Values: VDC Supply voltage • input voltage min/typ/max: • input power max: 11.0...13.8...20.0 V 13 W Spare battery voltage • charging volt. min/typ/max: • charging curr. min/typ/max: • discharg. volt. min/typ/max: • discharg. curr. min/typ/max: 11.0...12.2...13.0 V 730...800...870 mA 5.0...6.0...7.5 V 130...160...
PAMS Technical Documentation +VREF NHB–3 HF Desktop Charger CHH–8P Ref. voltage for analog parts • voltage min/typ/max: • current max: 2.4...2.4...3.1 V 5 mA Supply Voltages and Power Consumption on the DC4 Module Symbol: Description: Values: +5V Supply for 5 V logic parts • voltage min/typ/max: • current max: 4.75...5.0...5.25 V 15 mA Symbol: Description: Values: XMIC External microphone signal • Cable level: • 0 dBmO: 200 mVRMS 415 mVRMS Handsfree microhone signal • MRP, mic ref point.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Functional Description The DC3 module electronics consists of the following functional blocks: – Supply voltages – Control logic – Battery charging – Spare battery discharging – Watchdog circuit – Microphone amplifier and corresponding switches – Speaker amplifier and corresponding switches Supply Voltages The supply voltage +VI (11.0 V– 20.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Port A Signals of the Processor Port A: Function: PA0: PHONE GREEN (out) Phone LED control, green: ”1” PA1: PHONE RED (out) Phone LED control, red: ”1” PA2: SPARE GREEN (out) Spare battery LED control, green: ”1” PA3: SPARE RED (out) Spare battery LED control, red: ”1” PA4: DISCHRG BUTTON (in) Discharge button control, ”0”: start discharge PA5: SPARE DISCHRG (out) Discharge spare battery, ”1”: discharge enabled PA6: AUDIO POWER (ou
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Port D Signals of the Processor Port D: Function: PD0: PHONE MIC (out) Analog switch, ”1”: phone mic switched on PD1: ACC MIC (out) Analog switch, ”1”: accessory mic switched on PD2: HF MIC (out) Analog switch, ”1”: HF mic swithed on PD3: PHONE EAR (out) Analog switch, ”1”: phone ear swithed on PD4: ACC EAR (out) Analog switch, ”1”: accessory ear swithed on PD5: HF SPK (out) Analog switch, ”1”: HF speaker swithed on PD6: Unused NC
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Watchdog Circuits Under normal operation the processor is pulsating the WTCHDOG–line to reseting the ”power off”– and ”software reset”–watchdogs. If the processor doesn’t run correctly, then the transistor V210 turns off and the ”Software reset”–watchdog V211 gives reset pulse through C211 to the RESET–line. If after this reseting the processor still runs incorrectly, then the ”Power off”–watchdog (V212, V213) turns off the +5 V regulator N103.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Microphone Amplifier and Corresponding Switches Transistor amplifier circuit V420 and corresponding resistors and capasitors supplies bias current for microphone. Operational amplifier N430–B is used to amplify the microphone signal to the handphone. The gain of this amplifier is about 40 dB. The HF microphone signal is fed to the phone through the analog switches D400–B and D400–C.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Block Diagram of CHH–8 DC CONNECTOR DC3 MODULE PHONE CHARGING INDICATION CHARGER DATA BUFFER NOICE REDUC. SPARE BATTERY COMP. PROCESSOR SYSTEM CONNECTOR DC4 MODULE CHARGING / DATA CONNECTOR SPARE BATTERY CONNECTOR DISCHARG.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Circuit Diagram of DC3 Power Supply and Control Module Original 26/97 Page 19
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Circuit Diagram of DC3 Audio Switches and Amplifiers Original 26/97 Page 20
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Circuit Diagram of Connector Module DC4 Original 26/97 Page 21
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Layout and Foil Diagrams of DC4 Original 26/97 Page 22
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Parts List of DC3 ITEM CODE DESCRIPTION R103 R116 R117 R118 R119 R120 R122 R123 R127 R130 R200 R201 R202 R203 R204 R205 R206 R209 R215 R216 R218 R219 R220 R221 R222 R223 R230 R231 R232 R233 R234 R235 R236 R237 R238 R240 R241 R242 R243 R244 R245 R246 R247 1411123 1414452 1413635 1415600 1412423 1415784 1413635 1415600 1414420 1411669 1412430 1413635 1412729 1413635 1412430 1413917 1413635 1412423 1412536 1414533 1412536 1421108 1413917 141391
PAMS Technical Documentation R248 R249 R250 R251 R252 R253 R254 R255 R256 R257 R258 R300 R301 R302 R303 R304 R310 R311 R312 R313 R314 R315 R320 R321 R322 R323 R324 R330 R331 R335 R336 R337 R338 R339 R341 R400 R401 R402 R403 R404 R405 R406 R410 R411 R412 R413 R414 R415 1416040 1413603 1416160 1416202 1416040 1416160 1413603 1413603 1414124 1413635 1412430 1413635 1412729 1412423 1412423 1412423 1413635 1413635 1413635 1413635 1412335 1413635 1414533 1414283 1413829 1414283 1414533 1412536 1412536 1412536 14
PAMS Technical Documentation R416 R420 R421 R430 R431 R440 R441 R442 R443 R444 R445 R446 R447 R460 R461 R462 R463 R464 R500 R501 R502 R520 R530 R533 R534 C100 C101 C103 C104 C109 C110 C111 C112 C114 C115 C116 C117 C118 C119 C120 C121 C122 C123 C124 C128 C129 C150 C151 1413635 1414043 1413635 1412729 1412729 1413917 1413917 1413603 1414109 1414109 1412303 1412729 1413917 1413610 1414452 1412423 1413635 1413850 1412430 1412430 1413635 1412423 1413836 1413836 1412303 2310343 2310343 2309517 2501605 2501605 23
PAMS Technical Documentation C152 C153 C160 C210 C211 C212 C213 C220 C240 C241 C242 C243 C244 C250 C251 C252 C253 C300 C301 C302 C303 C310 C320 C340 C341 C342 C343 C400 C401 C402 C403 C404 C405 C410 C411 C412 C413 C414 C415 C420 C421 C422 C423 C424 C430 C431 C432 C440 2604431 2604431 2310449 2502736 2604209 2310343 2310343 2307816 2307816 2307816 2307816 2307816 2309517 2307816 2307816 2310449 2307816 2310343 2310343 2307816 2307816 2310343 2307816 2310544 2309517 2307816 2310343 2604209 2310343 2604209 26
PAMS Technical Documentation C441 C442 C443 C444 C445 C446 C447 C448 C449 C450 C451 C452 C460 C461 C463 C464 C465 C466 C467 C468 C469 C470 C471 C472 C473 C500 C501 C510 C511 C512 C513 C514 C515 C516 C517 C520 C521 C522 C523 C550 C551 C552 C553 C554 C555 C556 C599 C600 2310752 2604431 2310752 2310343 2310544 2310343 2310343 2310544 2310343 2310343 2604209 2310343 2604209 2310738 2604209 2310343 2310343 2310343 2604431 2604431 2310343 2502736 2309517 2310343 2310784 2310343 2310343 2310343 2310343 2310343 23
PAMS Technical Documentation L100 L101 L104 L105 L106 L107 L108 L109 L500 L501 L502 L503 B301 V100 V102 V103 V104 V106 V108 V110 V114 V115 V117 V120 V121 V200 V201 V212 V213 V220 V221 V222 V230 V240 V250 V310 V311 V312 V320 V330 V331 V333 V334 V335 V336 V337 V338 V339 3606946 3606946 3606946 3606946 3608519 3608519 3607555 0164030 3606946 3608519 3606946 3608519 4500822 4113828 4215954 4107027 4210106 4200917 4210108 4107160 4108639 4108639 4107027 4107027 4108639 4200917 4200917 4108639 4110074 4110074 42
PAMS Technical Documentation V341 V420 V460 D300 D400 D410 N100 N101 N102 N103 N250 N430 N460 S300 S301 S302 X100 X101 X440 X460 X500 X510 4108639 4200917 4200909 4340034 4309488 4309488 4309222 4305236 4375012 4301062 4309576 4309576 4309022 5200914 5200914 5200914 5414943 5431702 5416640 5416640 5431704 5401050 6500001 9380149 9853931 Original 26/97 Diode x 2 BAS28Ω Transistor BC848B/BCW32 Transistor BC858B/BCW30 IC, RAM MCU16/8 IC, 4 x bi.switch 74HC4066 IC, 4 x bi.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Parts List of DC4 Code: 0200235 ITEM CODE DESCRIPTION R700 R701 R702 R703 R704 R705 R706 C700 C701 C706 C707 C708 C709 C710 C711 L700 L701 L703 V700 V701 V702 D700 X700 X701 1413635 1412335 1413635 1412335 1413635 1412335 1413917 2310343 2310343 2310752 2310752 2310343 2307816 2310343 2310343 3606946 3608519 0164030 4108639 4108639 4108639 4340858 5431704 5469778 9853930 Chip resistor 100 k Chip resistor 1.
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Exploded View Original 26/97 Page 31
PAMS Technical Documentation NHB–3 HF Desktop Charger CHH–8P Assembly Parts ITEM Q’TY CODE DESCRIPTION VALUE, TYPE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 C1 C2 7 4 6293042 6501067 9450258 5140444 9460012 7133162 5140460 9460054 5409552 9460088 9450257 9460087 9480052 9380154 9560009 0200211 0200235 PT screw Adhesive foot Bottom cover Cond.
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