PHF–1 Technical Documentation Exploded View Assemply Parts ITEM 1 2 3 4 5 6 7 8 9 10 C1 Q’TY 2 4 Page 16 CODE DESCRIPTION VALUE, TYPE 9450254 9450255 9450256 9380154 6293012 5140098 9780087 9303320 9309555 6293012 0200179 Cover A Cover B Cover C Type label PT screw Speaker Coax coil Cradle Loudspeaker cloth PT screw DH3 module 1D 22196 1D 22197 2D 22198 4D 23477 KB22x8 FeZn clr 4Ω5W 4C22834 A4D 40109 A4D 40368 KB22x14 FeZn blk Original 03/97
Technical Documentation N100 N200 N300 N401 N402 X100 X200 X300 X400 4340108 4301182 4303440 4305236 4301062 5414943 5407016 5416640 5416638 9853924 9853924 Original 03/97 IC, regulator L4810 IC, 2 x op.amp. LM2902 IC, af amp+mute +4/30v dil1TDA1905 IC, 2 x comp. LM2903 IC, regulator LP2951AC Dc–jack d6.3/2 Jack stereo 2.5mm Pin header m1x2 p1.5 90deg 1a0r02 Connector 8–pole right angle 1.5 PCB DH3 116.9X61.0X1.6 D 3/PA PC board DH3 PHF–1 10 V 0.4 A SOT194 SO14S DIL16S SO8S SO8S pcb smd 1A0R02 1.5 116.
PHF–1 C403 C404 C405 C406 C408 C409 C410 C411 C501 C502 C503 C504 C505 C506 C507 C508 C509 C515 L001 L002 L400 L401 L501 Z001 V001 V010 V011 V012 V014 V020 V030 V040 V041 V202 V203 V400 V401 V402 V403 V404 V405 V406 V407 V408 V409 V410 V411 V412 Page 14 Technical Documentation 2309517 2309517 2310544 2310752 2310752 2604209 2502736 2310449 2310505 2310505 2310505 2310505 2310505 2320075 2312410 2310424 2310424 2501605 0164030 0164030 3607555 0164030 3616705 3640011 4103496 4210108 4107040 4108639 4108639
Technical Documentation R407 R408 R409 R410 R411 R412 R413 R414 R415 C001 C011 C012 C111 C201 C202 C206 C207 C208 C209 C210 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C231 C232 C233 C235 C236 C250 C251 C301 C302 C303 C304 C305 C306 C307 C308 C309 C401 C402 1413635 1415872 1415600 1411123 1412423 1415745 1412423 1411669 1412416 2310336 2604431 2310784 2503072 2604209 2310336 2310336 2310336 2310336 2310336 2310336 2310336 2310336 2604209 2310336 2604209 2604209 2310449 2604209 2604209 2310336 2310720
PHF–1 Technical Documentation Parts List EDMS issue 1.
Technical Documentation PHF–1 Layout Diagrams of DH3 Original 03/97 Page 11
PHF–1 Technical Documentation Circuit Diagram of DH3 Page 10 Original 03/97
Technical Documentation PHF–1 Block Diagram Original 03/97 Page 9
PHF–1 Technical Documentation Audio Section V202, R201 and R202 generates +5VA audio d.c. voltage. V202 is the microphone voltage regulator. N200 is the mic. amplifier. N200 is the differential amplifier wich eliminates disturbancies generated in curly cable ground wire resistor. N200 has same function in XEAR line. R235 and C231 are low pass filter wich eliminates noise. N300 is speaker power amplifier. R302, R303 and C303 stabilicies the power amplifier in high frequencies.
Technical Documentation PHF–1 System Connector X400 Pin Name Description 1 VC Supply voltage 2 M2BUS Serial bidirectional data control. 3 PHFS HF device power on/off 4 GND Ground 5 AGND Audio ground. 6 XEAR/HFJPWR Ext. audio/HF junction box identification. 7 XMIC/JCONN Ext. mic./HF box connection control signal. 8 AGND Audio ground. Circuit Description Input Circuit C1 is the EMI capacitor. F1 is the foil fuse. L1 and L2 are EMI suppressor chokes.
PHF–1 Technical Documentation External Signals and Connections The module has four external connectors, the power supply connector, HF microphone connector, HF speaker connector and system connector. Power Supply Connector X100 Pin Name Description 1 VC Supply voltage • pwr off current: 0.8...1 mA • pwr on/no charging current: 50...90 mA • pwr on/charging current: 600...
Technical Documentation PHF–1 The phone is connected to the unit by a system connector. There are also connectors for external power source, for standard HF–microphone and for external antenna(s). The Compact Handsfree Holder consists of speaker– and microphone– amplifiers, power on/off –logic, HF–speaker muting and the constant current switching regulator for charging the phone battery.
PHF–1 Technical Documentation Compact HF Holder PHF–1 Introduction The PHF–1 is compact handsfree holder for the second generation digital handportable telephones and they provide possibility to use handsfree operation where the fixed handsfree configuration is not possible. They have also phone battery charging function. Technical Summary The installation to the car is possible by four separate methods. Using the separate mounting plate, strechable bands, adhesive tape, or ”velco straps”.
Technical Documentation PHF–1 COMPACT HANDSFREE HOLDER PHF–1 Contents Compact HF Holder PHF–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Signals and Connections . . . . . . . . . . . . . . . . . . . .
PHF–1 Technical Documentation AMENDMENT RECORD SHEET Amendment Number Page 2 Date Inserted By Comments Original 03/97
COMPACT HANDSFREE HOLDER PHF–1 Original 03/97
