Nokia 232, 239 Service Manual chh7

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After Sales Technical Documentation

HANDSFREE DESKTOP
CHARGER
CHH–7
Original, 11/94 NMP Part No. 0275012
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Handsfree Desktop Charger CHH–7

AMENDMENT RECORD SHEET

After Sales
Technical Documentation
Amendment Number
Date Inserted By Comments
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After Sales Technical Documentation
Handsfree Desktop Charger CHH–7
HANDSFREE DESKTOP CHARGER CHH–7
CONTENTS
Page No
Introduction 5 Technical Summary 5
Operation 5 List of Modules 5 Basic Specifications 6
Technical Specifications 6
Modes of Operation 6 DC Characteristics 7 AC Characteristics 8 External Signals and Connections 9 Internal Signals and Connections 11 Mechanical Characteristics 12 User Interface Features 12
Charge States and Charge Control 13 Charge Indication to User 13
Environmental Conditions 15
Temperature Conditions 15
Functional Description 16
Circuit Description (DC3H) 18
Control Logic 18 Watchdog Function 21 Switch Mode Power Supply (SMPS) 21 Battery Charging 21 Spare Battery Discharging 22 Microphone Amplifier and Corresponding Switches 22 Speaker Amplifier and Corresponding Switches 22
Circuit Description (DC4H) 22
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Handsfree Desktop Charger CHH–7
Technical Documentation
Assembly 23 DC3H ModuleParts List 24 DC4H Module Parts List 32
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List of Figures
Figure 1: Block Diagram 16 Figure 2: Component Location Diagram 17 Figure 3: Exploded View 23 Figure 4: DC3H Circuit Diagram (Sheet 1) 33 Figure 5: DC3H Circuit Diagram (Sheet 2) 34 Figure 6: DC4H Circuit Diagram (Sheet 3) 35
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After Sales Technical Documentation

Introduction

The CHH–7 Handsfree Desktop Charger provides both charging and handsfree facilities. The charger enables a phone plus a spare battery to be charged; the spare battery is charged after the phone battery has been charged. CHH–7 can only be powered by the AC Power Supply (ACS–6U/X/E); the supply is connected to the charger via a socket at the rear of the charger.
Analogue data accessories may be used in conjunction with the Handsfree Desktop Charger; a connector at the rear of the charger is provided for this purpose.
The BABT approved version of CHH–7 is known as CHH–7X. Since both units are technically identical, all references to CHH–7 equally apply to CHH–7X.
Handsfree Desktop Charger CHH–7

Technical Summary

Operation
CHH–7 consists of a spare battery charging control processor, charging indicators and a switched mode power supply for charging the phone and the spare battery. The unit has an in–built hf–speaker and hf–microphone but the handsfree function is generated in the phone. There are also three operating buttons: the front one is a MUTE button for the CHH–7 microphone; the middle one is for redialling the last number dialled; and the rear one is for selecting the spare battery discharge.
List of Modules
Table 1. List of Modules
NAME OF MODULE TYPE
CODE
HF Deskstand Charger CHH–7 0675040 Fully Assembled Charger HF Desktop Charger and
Connector Module HF Desktop Charger DC3H 0200334 Main Electronic Components and Connector
DCXH 0200335 A single PCB biscuit containing both the HF Desktop
MATERIAL
CODE
NOTES
Charger and Connector Module
Connector Module DC4H 0200295 System Connectors, Data Buffer and Noise Comp Assembly Parts MCHH7 0260338 Mechanical Parts,Speaker, Microphone and Flex Foils
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Handsfree Desktop Charger CHH–7
Basic Specifications
Table 2. Basic Specifications
Power Consumption 13W max. Input Voltage Range 13.5V to 21.0V
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Technical Documentation
Battery Charger: Output Voltage
Output Current
Maximum Charging Time (empty battery): BTH–8S (400mAh): 45min
Maximum Discharging Time (full battery): BTH–8S (400mAh): 3h 30min
Operating Temperature +5C to +55C Charging Temperature +5C to +45C (40C when fitting battery) Speaker Output Power nominal: 1W / 8ohm External Main Dimensions 43mm (H) x 167mm (W) x 113mm (D) Weight 360g
10.0V to 13.0V 730mA to 870mA
BTH–8H (500mAh): 55min BTH–8SM (800mAh): 70min BTH–8HM (1100mAh): 100min
BTH–8H (500mAh): 4h 20min BTH–8SM (800mAh): 7h BTH–8HM (1100mAh): 8h 40min
NOTE: To ensure the battery is fully charged, it is recommended to
continue charging for 2 to 3 hours after a fast charge has been completed.

Technical Specifications

Modes of Operation

Power Off Mode: The unit receives no power at the DC–
connector.
Standby Mode: The unit receives the supply voltage at
the DC–connector. The processor is running but because there isn’t a phone or spare battery in the cradle, the charger remains off and the audio functions are inactive.
Active Mode: The telephone or spare battery is in the
cradle so the charging functions are active. Normally the handsfree speaker is muted. During a call and during the key beeps or alarming tones the speaker and corresponding audio switches are open.
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DC Characteristics

Table 3. Supply Voltages and Power Consumption on the Connectors of CHH–7
Handsfree Desktop Charger CHH–7
CONNECTOR
Pin/Connector
DC 1 / X100
SPARE BATTERY
X101, X102 X103, X104
SYSTEM 10 / X701
DATA Analogue 2 / X510
Table 4. Supply Voltages and Power Consumptions on the DC3H–module
SYMBOL/
MODULE
+VI Power Supply 13.5V 13.8V 21.0V
+VCC Charging voltage for the
+10VA Supply for logic and
+10VAS Switched supply for logic
+5V Supply for logic
+5VREF Reference voltage for uP 4.9V 5.0V 5.1V
+5VLD Supply voltage for LEDs 4.9V 5.0V 5.1V
+5VAN Supply for analogue parts 4.6V 5.0V 5.1V
+VAREF Reference voltage for
LINE SYMBOL MINIMUM TYPICAL/
VDC Input Voltage Input Power
VBAT Charging: Output Voltage Output Current Discharging: Input Voltage Input Current
VC Charging: Output Voltage Output Current
VD Output Voltage Output Current
PARAMETER MINIMUM TYPICAL/
battery
analogue parts
and analogue parts
parts
analogue parts
13.5V 13.8V 21.0V
11.0V 730mA
5.0V 130mA
11.0V 730mA
9.6V 10.0V 10.4V
10.3V 730mA
9.6V 10.0V 10.4V
9.1V 9.8V 10.2V
4.9V 5.0V 5.1V
2.2V 2.5V 2.7V
NOMINAL
12.2V 800mA
6.0V 160mA
12.2V 800mA
NOMINAL
11.5V 800mA
MAXIMUM
13.0W
13.0V 870mA
7.5V 200mA
13.0V 870mA
50.0mA
MAXIMUM
13W
13.3V 870mA
250mA
250mA
35mA
1.5mA
30mA
1mA
0.1mA
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Handsfree Desktop Charger CHH–7

AC Characteristics

Table 5. External Microphone signal
XMIC (1 kHz) TYPICAL/NOMINAL
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Technical Documentation
Cable level 0 dBmO
Table 6. Handsfree Microphone Signal
HFMIC (1 kHz) TYPICAL/NOMINAL
MRP +15.3dBPa / 50 cm (Mic Ref Point) HFMIC input –4.7dBPa (approx 20dB attenuation) Gain for HFMIC 40dB Cable Level 200mV
Table 7. External Earphone Signal
XEAR (1 kHz) TYPICAL/NOMINAL
Cable Level 0 dBmO
200mV 415mV
130mV 411mV
Table 8. Handsfree Speaker Signal
HFSP (1kHz) TYPICAL/NOMINAL
Cable Level 130mV Gain for HFSP 23dB
Table 9. Audio Specifications
f = 1 kHz MINIMUM TYPICAL/NOMINAL MAXIMUM
HF Microphone Sensitivity (0dB = 1V/Pa) –44dB –42dB –40dB Sending Idle Noise –61dBmO HF Speaker: SPL (1W @ 1m) +78dB +80dB +82dB Receiving Idle Noise –52dBPa (A) Speaker Output Power 1W/8
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Handsfree Desktop Charger CHH–7
Technical Documentation

External Signals and Connections

Table 10. List of External Connectors
CONNECTOR MODULE NOTES DESCRIPTION
SYSTEM DC4H CHH–7 <–––> Phone 10 connections SP ARE BATTERY DC3H CHH–7 <–––> Spare Battery 4 contact springs DATA DC3H CHH–7 <–––> Data Accessory 10 pins modular connector DC DC3H CHH–7 <–––> Power Supply 6.3 mm DC–Jack
Table 11. DC Connector X100
PIN LINE/
SYMBOL
1 VDC Supply voltage
Supply power
2 DGND Power supply ground 0V 0V 0V
CONTACT/
SPRING
X104 GND Supply power ground 0V 0V 0V X103 BTEMP Battery temp sensing 2.47V X102 BSI Battery size
X101 VBAT Charging voltage
LINE/
SYMBOL
PARAMETER MINIMUM TYPICAL/
NOMINAL
13.5V 13.8V 21.0V
Table 12. Spare Battery Connector X101, ....X104
PARAMETER MINIMUM TYPICAL/
NOMINAL
613mV (400mAh)
identification.
Charging current
11V 730mA
764mV (500mAh)
1.53V (800mAh)
2.29V (1100mAh) 12V
800mA
MAXIMUM
13.0W
MAXIMUM
13V 870mA
Table 13. System Connector X701
PIN LINE
SYMBOL
5 GND Power supply ground 0V 0V 0V 9 XMIC Microphone signal
8 AGND analogue ground 0V 0V 0V 7 M2BUS Serial bidirection data 0V
PARAMETER MINIMUM TYPICAL/
NOMINAL
200mV dc–level output impedance
3.0V 0V
3.6V
2.5V
MAXIMUM
700
0.7V Input ”0” state
5.25V Input ”1” state
0.35V Output ”0” state
5.25V Output ”1” state
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Handsfree Desktop Charger CHH–7
Table 13. System Connector X701 (continued)
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Technical Documentation
PIN
SYMBOL
3 HOOK Selects handsfree
operation
6 VC Supply / Charging 11V
10 GND Power supply ground 0V 0V 0V 4 XEAR /
HFJPWR
1 VC Supply / Charging 11V
2 XEXAUD Not used
PIN LINE
SYMBOL
2 +VD Supply voltage
3 DGND Supply power ground 0V 0V 0V
Earphone signal dc–level input impedance 10k
CHH–7 power switch 5.0V (power off)
Table 14. Data Connector X510
PARAMETER MINIMUM TYPICAL/
Supply current
MINIMUMPARAMETERLINE
NOMINAL
0V 0V 0V
12V
730mA
730mA
9.6V 10.0V 10.4V
800mA
130mV
2.5V
2.5V (power on)
12V
800mA
NOMINAL
13V 830mA
0.8V (test mode for power off watch–dog)
13V 870mA
50mA
MAXIMUMTYPICAL/
MAXIMUM
4 M2BUS Serial bidirection data 0V
3.0V 0V
3.6V 1, 5 Not Used 6 Not Used 7 AGND analogue ground 0V 0V 0V 8 XMIC Microphone signal
dc–level output impedance
9 XEAR Earphone signal
dc–level input impedance 10k
0.2V
4.7V
200mV
2.5V
130mV
2.5V
0.7V Input ”0” state
5.25V Input ”1” state
0.35V Output ”0” state
5.25V Output ”1” state
700
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Handsfree Desktop Charger CHH–7
Technical Documentation

Internal Signals and Connections

Table 15. List of Internal Connectors
CONNECTOR MODULE NOTES DESCRIPTION
Internal System Connector
Spare Battery Connector
Speaker Connector DC3H X460 <––> Hf–speaker 2 connections, wires Microphone
Connector
Table 16. Internal System Connectors X500 / DC3H and X700 / DC4H
PIN
AT
X700
1 2
5 M2BUS Serial bidirection data 0V
8 AGND analogue ground 0V 0V 0V 7 XEAR Earphone signal
6 AGND analogue ground 0V 0V 0V
LINE
SYMBOL
VC Supply / Charging 11V
DC3H/ DC4H
DC3H X101...X104 <––> Battery Conn. Contact Springs
DC3H X440 <––> Hf–microphone 2 connections, wires
PARAMETER MINIMUM TYPICAL/
dc–level input impedance 10k
DC3H: X500 <–> DC4H: X700 10 connections, flex foil
NOMINAL
730mA
3.0V 0V
3.6V
12V 800mA
130mV
2.5V
13V 830mA
0.7V Input ”0” state
5.25V Input ”1” state
0.35V Output ”0” state
5.25V Output ”1” state
MAXIMUM
9 XMIC Microphone signal
dc–level output impedance
10 AGND analogue ground 0V 0V 0V 3
4
PIN LINE
1 HFSPK HF Speaker Signal
2 AGND analogue Ground 0V 0V 0V
DGND Power supply ground 0V 0V 0V
Table 17. Speaker Connector X460 / DC3H
PARAMETER MINIMUM TYPICAL/NOMINAL MAXIMUM
SYMBOL
Load Impedance Output Power
200mV
2.5V 700
2.83V 8 1W
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Handsfree Desktop Charger CHH–7
Table 18. Microphone Connector X440 / DC3H
After Sales
Technical Documentation
PIN LINE
SYMBOL
1 HFMIC HF Microphone
2 AGND analogue ground 0V 0V 0V
PARAMETER MINIMUM TYPICAL/NOMINAL MAXIMUM
Output Voltage (without load) Input Impedance
4.7V
1.0k

Mechanical Characteristics

Table 19. Mechanical Characteristics
UNIT DIMENSIONS (mm)
(W x H x D)
CHH–7: Colour: Warm Black
DCXH PCB
includes DC3H and DC4H modules
flex foil 65 x 9 System connector flex
155 x 1.6 x 94.5 PCB has 6 layers / 1.6mm
WEIGHT
(g)
NOTES
DC4H–module: 50 x 1.6 x 22 PCB has 6 layers / 1.6 mm

User Interface Features

Charging takes place at a battery temperatures of between 5 and 45. Control of the charging process for the phone is performed by a microprocessor located inside the phone; control of the charging process for the spare battery is performed by a separate microprocessor located in the HF desktop charger. The phone is always charged first, followed by the spare battery. When a spare battery is fitted, the temperature must be less than 40       
A battery provides a larger capacity if it is occasionally discharged completely. The user can do this by using the ‘deep discharge‘ feature. This feature only operates with the spare battery slot. With the battery located in the spare slot, the spare battery will automatically be discharged and then re–charged to full capacity when the ‘discharge‘ –button is depressed. If this button is pressed twice the discharge function is cancelled.
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Charge States and Charge Control
Charge current for the phone is supplied through a series connected switching transistor located in the phone. When this transistor is on, the charger is supplying a constant current to the phone. This is the rapid charge mode.
When the transistor is off, no current is supplied to the phone and the charger is in the constant voltage mode.
Having been charged up in the rapid charge mode, the battery is kept fully charged by using pulsed charging, ie. switching power alternately on and off at a variable duty cycle and a frequency of a few Hz.
The desktop charger also contains control logic for spare battery charging, which is enabled when no phone is connected or when the phone is in the pulsed charge mode. When the phone is in pulse charge mode the spare battery can only be charged at 70% of the rate when no phone is present.
Handsfree Desktop Charger CHH–7
Charge Indication to User
The desktop charger has dual–colour LEDs to indicate the charge state of the phone and the spare battery, the right hand LED is for the phone and the left hand LED is for the spare battery. The LEDs are off when there is no phone or spare battery connected.
Right LED for phone: Red phone LED indicates that the phone battery is being charged in fast
charge mode or charging is disabled due to battery temperature being outside permissible range.
Green phone LED indicates that the phone battery is full and that trickle charge mode is active.
Left LED for spare battery: Red spare battery LED indicates that the battery is not full; either there is
a fast charge mode active or charging is disabled due to a battery temperature ’fault’ or the phone is being fast charged.
Green spare battery LED indicates that the battery is fully charged. Flashing red spare battery LED indicates that a discharge cycle is active.
The liquid–crystal display of the phone also contains a three–bar battery charge display. ”Charging sequence active” (state A) is indicated by the bars illuminated sequentially, starting from the bottom bar (each bar is on for a period of 1 s).
”Battery full” (state B) is indicated by all three bars steadily illuminated.
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Technical Documentation
Table 20. Phone Operating Status
PHONE OPERA TING STA TUS RIGHT HAND LED PHONE DISPLAY
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Desktop charger connected to mains through ac adapter, phone disconnected
Rapid charge or waiting for the right temperature (+5C to +45C)
Battery full – trickle charge green state B (all bars steadily
Table 21. Spare Battery Operating Status
SPARE BATTERY OPERATING STATUS LEFT HAND LED
Desktop charger connected to mains through ac adapter, spare battery disconnected
Rapid charge of spare battery or waiting for the phone charging ready or for the right temperature
Spare battery full – trickle charge green Discharge of spare battery flashing red
red state A (bars illuminated
sequentially)
illuminated)
red
Handsfree Function
When located in the charger, the phone always operates in handsfree mode; the charger’s internal HF speaker and HF microphone being active during the call. It is also possible to switch between handsfree and handset operation while a call is in progress. This is done by removing the phone from the charger (to return to handset operation) or placing it in the charger (to return to handsfree operation).
The HF speaker volume is adjusted using the volume keys located on the side of the phone. The HF volume level is set independently from the phone’s internal earpiece volume; the HF volume setting is stored in the phone’s memory when the phone is removed from the charger. The HF microphone audio can be muted by pressing the mute key on the front edge of the charger. The muted state is indicated by the message ”MUTE” appearing on the phone’s display. Pressing the ”MUTE” key a second time cancels the mute function.
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Environmental Conditions

Temperature Conditions
Table 22. Allowed Ambient Temperature
ENVIRONMENTAL PARAMETER VALUE
Handsfree Desktop Charger CHH–7
Operating Temperature
Storage Temperature
– 5 to + 55°C (charging: + 5 to + 45°C)
– 40 to + 85°C
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Handsfree Desktop Charger CHH–7

Functional Description

Figure 1: Block Diagram
DC CONNECTOR
CHARGER
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Technical Documentation
CHH–7
MODULE
PHONE
CHARGING
INDICATION
MODULE
SPARE BATTERY CONNECTOR
SPARE
BATTER Y
CHARGE /
DISCHARGE
CONTROL BUTTONS
PROCESSOR
CHARGING LEDs
RFI FILTER COMP.
SYSTEM CONNECTOR
AUDIO
DATA CONNECTOR
SPEAKER HFMIC
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Figure 2: Component Location Diagram
Handsfree Desktop Charger CHH–7
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Handsfree Desktop Charger CHH–7

Circuit Description (DC3H)

The DC3H–Module consists of the following functional blocks:
– Supply Voltages – Control Logic – Battery Charging – Spare Battery Discharging – Watchdog Function – Switch Mode Power Supply – Microphone Amplifier and corresponding switches – Speaker Amplifier and corresponding switches
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Technical Documentation
Refer to Figures 4 and 5 for DC3H circuit diagrams (sheets 1 and 2).
Control Logic
Charging is controlled by processor D300. The D300 is a single–chip type controller incorporating RAM, ROM, an A/D converter, and a multifunction timer/counter. The processor communicates with the phone via the M2BUS. The M2BUS interface comprises transistors V200, V201 and corresponding resistors.
Table 23. Port A Signals of the Processor:
PORT A NOTES
P A0: PHONE GREEN (output) Phone LED control, green: ”1” P A1: PHONE RED (output) Phone LED control, red: ”1” P A2: SP ARE GREEN (output) Spare battery LED control, green: ”1” P A3: SPARE RED (output) Spare battery LED control, red: ”1” P A4: DISCHARGE BUTTON (input) Discharge button control,
”0”: start / stop discharge
P A5: SP ARE DISCHARGE (output) Discharge spare battery ,
”1”: discharge enabled
PA6: Unused (output) Not Used PA7: CHARGER (output) Charger Switch, ”1”: charger on
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⇒ CHH–7
Handsfree Desktop Charger CHH–7
Technical Documentation
Table 24. Port B Signals of the Processor: (continued)
PORT B NOTES
PB0: SERVICE J301 (output) See next table PB1: SERVICE J302 (output) See next table PB2: SERVICE J303 (output) See next table PB3: SERVICE J304 (output) See next table PB4: SERVICE J305 (output) Not Used PB5: LAST NUMBER REDIAL (input) Last Number Redial button, ”0”: activation PB6: HFMIC MUTE (input) HF Microphone Muting, ”0”: activation PB7: PHONE IDENTIFICATION(input) pulled up +5V (= state ”1”)
Table 25. Service Test Pins of Port B:
J304 J303 J302 J301 NOTES
0 0 0 1 Battery voltage hi limit reached 0 0 1 0 Maximum charge time 0 0 1 1 Voltage drop (delta V) 0 1 0 0 Battery temperature high 0 1 0 1 Constant voltage
Table 26. Port C Signals of the Processor:
PORT C NOTES
PC0: TXD (output) M2BUS Transmit PC1: RXD (input) M2BUS Receive PC2: Unused (input) Not Used PC3: TRXDINT (input) M2BUS Interrupt PC4: DVCE0 (input)
PC5: DVCE1 (input) PC6: SP ARE CHARGE (output) Spare Battery Charging, ”1”: Charging on
Device Type ”1”
Device Type ”0”
PC7: WATCHDOG (output) Watchdog Reset, ”01010...”: Watchdog reset on
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Table 27. Port D Signals of the Processor:
PORT D NOTES
PD0: PHONE MIC (output) analogue Switch, ”1”: Phone mic switched on PD1: ACC MIC (output) analogue Switch, ”1”: Accessory mic switched on PD2: HF MIC (output) analogue Switch, ”1”: HF mic switched on PD3: PHONE EAR (output) analogue Switch, ”1”: Phone ear switched on PD4: ACC EAR (output) analogue Switch, ”1”: Accessory ear switched on PD5: HF SPK (output) analogue Switch, ”1”: HF speaker switched on PD6: Unused (output) Not Used PD7: Unused (output) Not Used
Table 28. Port F Signals of the Processor:
PORT F NOTES
PF0: Unused (input) Not Used PF1: Unused (input) Not Used PF2: Unused (input) Not Used PF3: Unused (input) Not Used PF4: Unused (input) Not Used PF5: Unused (input) Not Used PF6: Unused (input) Not Used PF7: Unused (input) Not Used
Table 29. Processor A/D Inputs:
NAME NOTES
AN0: VBATL Battery voltage AN1: VBATH High resolution battery voltage AN2: PHOCURDET Phone current detect AN3: BATTEMP Battery temperature AN4: BATTSZ Battery size AN5: CHRGVOLT Charger voltage detection AN6: PWR Phone connection detection AN7: LIREF Not Used
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Watchdog Function
Under normal operating conditions the processor is pulsating the WATCHDOG–line in order to reset the power–off function of regulator N102. If the processor is not functioning correctly and hence the regulator does not send the pulse to the XPWROFF–line within the 100ms timeout period, the regulator reverts to its power–off state resetting the processor and switching the VAREF and +VAN voltages off. The regulator and the processor can be restarted by pressing the discharge button (S300) once or switching the power supply (connected to X100) off and on. The supply voltage (+VA) for the regulator must be greater than 8.1V in order for the regulator to switch on.
Switch Mode Power Supply (SMPS)
C100 and C101 are the EMI capacitors. L100 and L101 are EMI suppressor chokes. V100 is the voltage suppressor (zener) diode.
Handsfree Desktop Charger CHH–7
The microprocessor D300 pin 2 starts the SMPS by starting reference regulator N103. V115–1 leads the initial current to totally empty the battery. V106 is a constant current source which sets the voltage value of R118. The same voltage appears across the current shunt resistor R103 when the SMPS is working. N101–a is a pulse width modulator. N101–b, together with R122, C103 and V114–1, generates a minimum pulse width. R127 and R521 are input and output voltage correction resistors. V103 limits the comparator power supply +VS. V115–2 and V372 limits the comparator output voltage. V341–1 and C341 form a bootstrap circuit, which acts like a voltage doubler and generates the positive gate voltage to switch the fet V102 gate. L111 (L109), R130 and C340 are EMI–suppression components. L108 is the main SMPS inductor. V110 limits the maximum output voltage.
Battery Charging
Charging current for the phone battery is supplied when the processor switches the SMPS on after the phone is connected to the system connector X701 on the DC4H module. The charger voltage should be between 13.5V and 21.0V. The phone battery’s charging state is indicated by the red (V344 / V345) and green (V333) LEDs. Because the phone and the spare battery cannot be charged simultaneously, the charging current of the phone must be detected: this is achieved by a differential amplifier (N250–A) and corresponding resistors.
Charging current for the spare battery is fed in via switching transistor V221 and Schottky diode V220. The transistor is controlled by the processor. When the phone battery is not being charged and hence the spare battery is allowed to charge, the transistor is on and a constant current is supplied to the battery (the red LED V331 lights). In the pulsed charging mode, charging current is adjusted by pulsing this charge current (the green LED V330 lights).
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Spare battery voltage and V voltage are determined by reading the VBAT line state. Voltages are measured through resistor divider R250 / R251 and the amplifier N250–B.
Spare battery size is determined by reading the BSI line state. This is pulled to the +5V reference voltage by R243. In the battery pack a ’size’ resistor is connected between BSI and GND.
Temperature is measured over the BTEMP line. This line is pulled to the +5V reference voltage by R242. In the battery pack an NTC resistor is connected between BTEMP and GND.
Spare Battery Discharging
The HF desktop charger is also provided with a discharge function. This is activated by pressing the discharge button S300. Resistors R230 to R237 determine the discharge current which is fed through switching transistor V230 which is controlled by the processor. Discharging is indicated by a flashing red LED (V331). The battery is discharged to +5V and thereafter charged normally to full capacity.
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Technical Documentation
Microphone Amplifier and Corresponding Switches
Transistor amplifier circuit V420 and the corresponding resistors and capacitors supply bias current for the microphone. Operational amplifier N430–B amplifies the microphone signal before it is fed to the phone. The gain of the op amp is approximately 38 dB.
The HF microphone signal is fed to the phone via analogue switches D400–B and D400–C. The microphone signal XMIC, from the data accessory (X510) is fed to the phone via switches D400–A and D400–C. The supply voltage for the amplifier and the analogue switches is taken from the +5VAN regulator N102. The +VAREF reference voltage is derived from the N430–A and the +5VAN analogue voltage.
Speaker Amplifier and Corresponding Switches
The XEAR signal from the phone is fed to the HF speaker via analogue switches D410–C and D410–B. The XEAR signal is amplified about 23dB (+39dB via amplifier N460, –1dB via the analogue switches, and –15dB via resistors R460 and R461). The XEAR signal from the phone can be fed to data accessory (X510) via analogue switches D410–C and D410–A. The supply voltage +10VAS for the speaker amplifier is derived from the regulator N100.

Circuit Description (DC4H)

The DC4H–module electronics comprise noise reduction components only. ’Spark gaps’ E1, E2, E4 and E8 protect against electrostatic discharge. Refer to Figure 6 – Circuit Diagram (sheet 3).
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After Sales Technical Documentation

Assembly

Figure 3: Exploded View
9
Handsfree Desktop Charger CHH–7
12
3X
1
2X
13
8
7
1
6X
14
10
6
15
11
16
3X
5 4
3
2
4X
ITEM 15 CHH–7X ONLY
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Handsfree Desktop Charger CHH–7
Technical Documentation

Assembly Parts

ITEM QTY CODE DESCRIPTION VALUE
1 8 6293012 Pt–Screw KB22x8 WN1442 2 4 6501067 Adhesive Foot D8.0 3 1 9450322 Bottom Cover D11403 4 1 5140444 Cond. Microphone 63 +/– 2dB 5 1 9460012 Microphone Pad 4D21140 6 1 7133160 Flex Foil 10x0.5, 0.8mm 7 1 5140460 Loudspeaker 8R 2W D=45
8 1 9460054 Speaker Seal Ring 3D22231 9 1 9560009 Ballast 4D23334
After Sales
H=19
10 1 9460088 Light Guide 3D22992 11 1 9450324 Front Cover D11402 12 3 9460087 Discharge Button 4D22992 13 1 9480052 Speaker Screen 4D22694 14 1 9380154 Type Label 4D22419 15 1 9380488 BABT Label (CHH–7X only) A12455 16 3 9560022 Spring (for buttons) 4D24399

DC3H Module Parts List

ITEM CODE DESCRIPTION VALUE TYPE
R100 1412279 Chip resistor 2.2 5 % 0.063 W 0805 R103 1411123 Melf resistor 0.22 5 % 0.2 W 0204 R116 1414452 Chip resistor 10.0 k 1 % 0.063 W 0805 R117 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R118 1415600 Melf resistor 1.0 k 1 % 0.2 W 0204 R119 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R120 1415784 Melf resistor 4.75 k 1 % 0.2 W 0204 R122 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R123 1415600 Melf resistor 1.0 k 1 % 0.2 W 0204 R127 1414420 Chip resistor 680 k 5 % 0.063 W 0805 R130 1411669 Chip resistor 22 5 % 0.063 W 0805 R200 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R201 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R202 1412729 Chip resistor 33 k 5 % 0.063 W 0805
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R203 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R204 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R205 1413917 Chip resistor 150 5 % 0.063 W 0805 R206 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R209 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R215 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R216 1414533 Chip resistor 56 k 1 % 0.063 W 0805 R218 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R219 1415632 Melf resistor 33.0 k 1 % 0.2 W 0204 R220 1413917 Chip resistor 150 5 % 0.063 W 0805 R221 1413917 Chip resistor 150 5 % 0.063 W 0805 R222 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R223 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R230 1415576 Melf resistor 301 1 % 0.2 W 0204 R231 1415576 Melf resistor 301 1 % 0.2 W 0204 R232 1415576 Melf resistor 301 1 % 0.2 W 0204 R233 1415576 Melf resistor 301 1 % 0.2 W 0204 R234 1415576 Melf resistor 301 1 % 0.2 W 0204 R235 1415576 Melf resistor 301 1 % 0.2 W 0204 R236 1415576 Melf resistor 301 1 % 0.2 W 0204 R237 1415576 Melf resistor 301 1 % 0.2 W 0204 R238 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R240 1414533 Chip resistor 56 k 1 % 0.063 W 0805 R241 1414452 Chip resistor 10.0 k 1 % 0.063 W 0805 R242 1415664 Melf resistor 27.4 k 1 % 0.2 W 0204 R243 1414283 Chip resistor 100 k 1 % 0.063 W 0805 R244 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R245 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R246 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R248 1416040 Melf resistor 56.2 k 1 % 0.2 W 0204 R249 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R250 1416160 Melf resistor 100 k 1 % 0.2 W 0204 R251 1416202 Melf resistor 121 k 1 % 0.2 W 0204 R252 1416040 Melf resistor 56.2 k 1 % 0.2 W 0204 R253 1416160 Melf resistor 100 k 1 % 0.2 W 0204 R254 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R255 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R256 1414124 Chip resistor 120 k 5 % 0.063 W 0805 R257 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R258 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R300 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R301 1412729 Chip resistor 33 k 5 % 0.063 W 0805
Handsfree Desktop Charger CHH–7
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Technical Documentation
R302 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R303 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R304 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R310 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R311 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R312 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R313 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R314 1412335 Chip resistor 1.0 k 5 % 0.063 W 0805 R315 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R320 1414533 Chip resistor 56 k 1 % 0.063 W 0805 R321 1414283 Chip resistor 100 k 1 % 0.063 W 0805 R322 1413829 Chip resistor 10 5 % 0.063 W 0805 R323 1414283 Chip resistor 100 k 1 % 0.063 W 0805 R324 1414533 Chip resistor 56 k 1 % 0.063 W 0805 R330 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R331 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R332 1421108 Melf resistor 30.1 k 1 % 0.2 W 0204 R335 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R336 1412536 Chip resistor 22 k 5 % 0.063 W 0805 R337 1412254 Chip resistor 270 5 % 0.063 W 0805 R338 1412198 Chip resistor 56 5 % 0.063 W 0805 R339 1412254 Chip resistor 270 5 % 0.063 W 0805 R341 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R400 1413917 Chip resistor 150 5 % 0.063 W 0805 R401 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R402 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R403 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R404 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R405 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R406 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R410 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R411 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R412 1413917 Chip resistor 150 5 % 0.063 W 0805 R413 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R414 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R415 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R416 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R420 1414043 Chip resistor 1.8 k 5 % 0.063 W 0805 R421 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R430 1412729 Chip resistor 33 k 5 % 0.063 W 0805 R431 1412729 Chip resistor 33 k 5 % 0.063 W 0805 R440 1413917 Chip resistor 150 5 % 0.063 W 0805
After Sales
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R441 1413917 Chip resistor 150 5 % 0.063 W 0805 R442 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R443 1414109 Chip resistor 15 k 5 % 0.063 W 0805 R444 1414109 Chip resistor 15 k 5 % 0.063 W 0805 R445 1412303 Chip resistor 330 5 % 0.063 W 0805 R446 1412729 Chip resistor 33 k 5 % 0.063 W 0805 R447 1413917 Chip resistor 150 5 % 0.063 W 0805 R460 1413603 Chip resistor 47 k 5 % 0.063 W 0805 R461 1414452 Chip resistor 10.0 k 1 % 0.063 W 0805 R462 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R463 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R464 1413850 Chip resistor 4.7 5 % 0.063 W 0805 R500 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R500 1412729 Chip resistor 33 k 5 % 0.063 W 0805 R501 1412430 Chip resistor 10 k 5 % 0.063 W 0805 R501 1412729 Chip resistor 33 k 5 % 0.063 W 0805 R502 1413635 Chip resistor 100 k 5 % 0.063 W 0805 R520 1412423 Chip resistor 4.7 k 5 % 0.063 W 0805 R530 1413836 Chip resistor 47 5 % 0.063 W 0805 R532 1412286 Chip jumper 0805 R533 1413836 Chip resistor 47 5 % 0.063 W 0805 R534 1412303 Chip resistor 330 5 % 0.063 W 0805 C100 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C101 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C103 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C104 2501605 Electrol. cap. 100 u 20 % 35 V RM3.5 C109 2501605 Electrol. cap. 100 u 20 % 35 V RM3.5 C110 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C111 2502736 Electrol. cap. 220 u 20 % 16 V 3.5MM C112 2502736 Electrol. cap. 220 u 20 % 16 V 3.5MM C114 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C115 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C116 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C117 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C118 2604495 Tantalum cap. 22 u 20 % 16 V 7.3x4.4x2.8 C119 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C120 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C121 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C122 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C123 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C124 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C128 2310752 Ceramic cap. 10 n 20 % 50 V 0805
Handsfree Desktop Charger CHH–7
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Handsfree Desktop Charger CHH–7
Technical Documentation
C129 2309884 Ceramic cap. 4.7 p 0.25 % 50 V 0805 C150 2310544 Ceramic cap. 1.0 n 5 % 50 V 0805 C151 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C153 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C154 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C160 2310449 Ceramic cap. 150 p 5 % 50 V 0805 C210 2502736 Electrol. cap. 220 u 20 % 16 V 3.5MM C211 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C212 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C213 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C220 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C240 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C241 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C242 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C243 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C244 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C250 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C251 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C252 2310449 Ceramic cap. 150 p 5 % 50 V 0805 C253 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C300 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C301 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C302 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C303 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C310 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C320 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C340 2310544 Ceramic cap. 1.0 n 5 % 50 V 0805 C341 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C341 2502736 Electrol. cap. 220 u 20 % 16 V 3.5MM C342 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C343 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C400 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C401 2310488 Ceramic cap. 330 p 5 % 50 V 0805 C402 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C403 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C404 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C405 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C410 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C411 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C412 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C413 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C414 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8
After Sales
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C415 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C420 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C421 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C422 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C423 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C424 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C430 2307816 Ceramic cap. 47 n 20 % 25 V 0805 C431 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C432 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C440 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C441 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C442 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C443 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C444 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C445 2310544 Ceramic cap. 1.0 n 5 % 50 V 0805 C446 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C447 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C448 2310544 Ceramic cap. 1.0 n 5 % 50 V 0805 C449 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C450 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C451 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C452 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C460 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C461 2310738 Ceramic cap. 4.7 n 20 % 50 V 0805 C463 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C464 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C465 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C466 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C467 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C468 2604431 Tantalum cap. 10 u 20 % 16 V 6.0x3.2x2.8 C469 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C470 2502736 Electrol. cap. 220 u 20 % 16 V 3.5MM C471 2310784 Ceramic cap. 100 n 10 % 25 V 0805 C472 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C473 2309517 Ceramic cap. 100 n 10 % 50 V 1206 C500 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C501 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C510 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C511 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C512 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C513 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C520 2310343 Ceramic cap. 22 p 5 % 50 V 0805
Handsfree Desktop Charger CHH–7
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Technical Documentation
C521 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C522 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C523 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C550 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C551 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C552 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C553 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C554 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C555 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C556 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C599 2604209 Tantalum cap. 1.0 u 20 % 16 V 3.2x1.6x1.8 C600 2309517 Ceramic cap. 100 n 10 % 50 V 1206 L100 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L101 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L104 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L105 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L106 3608519 Chip coil 1.2 u 5 % 1206 L107 3608519 Chip coil 1.2 u 5 % 1206 L110 3607555 Coil 2 A L111 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L500 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L501 3608519 Chip coil 1.2 u 5 % 1206 L502 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L503 3608519 Chip coil 1.2 u 5 % 1206 B301 4500822 Crystal 11.0592 MHz CL30PF H=3.6MM V100 4113828 Trans. supr. 28 V 28 A 600 W DO214AA V102 4215954 MosFet, RFD14N05 n–ch 50 V 10 A TO252 V103 4107027 Zener diode, BZX84 5 % 16 V 0.3 W SOT23 V104 4210106 Transistor BSR19 npn 14 V 0.6 A SOT23 V106 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V108 4210108 Transistor BSR20, pnp 12 V 0.6 A SOT23 V110 4107160 Zener diode, BZX84 5 % 12 V 0.3 W SOT23 V114 4108639 Diode x 2 BAS28 75 V 250 mA SOT143 V115 4108639 Diode x 2 BAS28 75 V 250 mA SOT143 V117 4107027 Zener diode, BZX84 5 % 16 V 0.3 W SOT23 V200 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V201 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V212 4108639 Diode x 2 BAS28 75 V 250 mA SOT143 V213 4110074 Schottky diode, STPS340U 40 V 3 A SOD6 V220 4110074 Schottky diode, STPS340U 40 V 3 A SOD6 V221 4210020 Transistor BCP69–25 pnp 20 V SOT223 V222 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23
After Sales
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V230 4200226 Darl. transistor BCV27 npn 30 V 300 mA SOT23 V240 4100567 Sch. diode x 2 BAS70–04 70V15 mA SERSOT23 V250 4100567 Sch. diode x 2 BAS70–04 70V15 mA SERSOT23 V310 4200909 Transistor BC858B/BCW30 pnp 30 V 100 mA SOT23 V311 4210020 Transistor BCP69–25 pnp 20 V SOT223 V312 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V320 4110074 Schottky diode STPS340U 40 V 3 A SOD6 V330 4864378 LED Green 2.2 V 0805 V331 4864380 LED Red 0805 V333 4864378 LED Green 2.2 V 0805 V334 4864380 LED Red 0805 V335 4864380 LED Red 0805 V336 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V337 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V338 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V339 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V341 4108639 Diode x 2 BAS28 75 V 250 mA SOT143 V342 4107027 Zener diode BZX84 5 % 16 V 0.3 W SOT23 V343 4108639 Diode x 2 BAS28 75 V 250 mA SOT143 V420 4200917 Transistor BC848B/BCW32 npn 30 V 100 mA SOT23 V460 4200909 Transistor BC858B/BCW30 pnp 30 V 100 mA SOT23 D300 4340034 IC, RAM MCU16/8 QFP64 D400 4309488 IC, 4 x bi.switch 74HC4066 SO14S D410 4309488 IC, 4 x bi.switch 74HC4066 SO14S N100 4309222 IC, regulator L4810 0.4 A SOT82 N100 4340108 IC, regulator L4810 10 V 0.4 A SOT194 N101 4305236 IC, 2 x comp. LM2903 SO8S N102 4375012 IC, PSL p–supp NMP75012 SO20 N103 4301062 IC, regulator LP2951AC SO8S N250 4309576 IC, 2 x op.amp. TLC27M2I SO8S N430 4309576 IC, 2 x op.amp. TLC27M2I SO8S N460 4309022 IC, af amp 1w 4r 15V s TDA7233, SO8 S300 5200914 Push button switch 2–pole 6x7 smd S301 5200914 Push button switch 2–pole 6x7 smd S302 5200914 Push button switch 2–pole 6x7 smd X100 5414943 Dc–jack d6.3/2 pcb X101 9510171 Batt.conn.spring a11401 chh–7 X102 9510171 Batt.conn.spring a11401 chh–7 X103 9510171 Batt.conn.spring a11401 chh–7 X104 9510171 Batt.conn.spring a11401 chh–7 X440 5416640 Pin header m1x2 p1.5 90deg 1a0r02 1A0R02 X460 5416640 Pin header m1x2 p1.5 90deg 1a0r02 1A0R02
Handsfree Desktop Charger CHH–7
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Technical Documentation
X500 5431710 Flexfoil connect 1x10 0.8mm smd X510 5401050 Modular jack 10 shielded pcb

DC4H Module Parts List

ITEM CODE DESCRIPTION VALUE TYPE
R706 1413917 Chip resistor 150 5 % 0.063 W 0805 C700 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C701 2310343 Ceramic cap. 22 p 5 % 50 V 0805 C702 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C706 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C707 2310752 Ceramic cap. 10 n 20 % 50 V 0805 C708 2310343 Ceramic cap. 22 p 5 % 50 V 0805 L700 3606946 Ferrite bead 0.2r 26r/100MHz 1206 L701 3608519 Chip coil 1.2 u 5 % 1206 L703 0164030 Choke 9 u X700 5431710 Flexfoil connect 1x10 0.8mm smd X701 5469784 Accessory conn 10af+1rf desk stnd STND
After Sales
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