HP Pavilion Dv4 2100 Entertainment Notebook Pc Series Manual

7–6 Maintenance and Service Guide
Backup and recovery
Recovering from the recovery discs
To restore the system from the recovery discs:
1. Back up all personal files.
2. Insert the first recovery disc into the optical drive and restart the computer.
3. Follow the on-screen instructions.
Recovering from the dedicated recovery partition (select models only)
✎Computers with an SSD might not have a recovery partition. If the computer does not have a recovery partition, 
you are not able to recover using this...

Maintenance and Service Guide8–1
8
Connector pin assignments
Audio-in (microphone)
 
PinSignal
1Audio signal in
2Audio signal in
3Ground
PinSignal
1Audio out, left channel
2Audio out, right channel
3Ground 

8–2Maintenance and Service Guide
Connector pin assignments
External monitor
 
PinSignal
1Red analog
2Green analog
3Blue analog
4Not connected
5Ground
6Ground analog
7Ground analog
8Ground analog
9+5 VDC
10Ground
11Monitor detect
12DDC 2B data
13Horizontal sync
14Vertical sync
15DDC 2B clock 

Connector pin assignments
Maintenance and Service Guide8–3
HDMI
 
PinSignal
1Transition minimized differential signal (TDMS) data 2+
2TDMS data 2 shield
3TDMS data 2-
4TDMS data 1+
5TDMS data 1 shield
6TDMS data 1 shield
7TDMS data 0+
8TDMS data 0 shield
9TDMS data 0-
10TDMS clock +
11TDMS data clock shield
12TDMS data clock-
13Consumer electronics control
14Not connected
15Display data channel (DDC) clock
16DDC data
17Ground
18+5V Power
19Hot plug detect 

8–4Maintenance and Service Guide
Connector pin assignments
RJ-11 (modem) (select models only)
PinSignal
1Unused
2Tip
3Ring
4Unused
5Unused
6Unused 

Connector pin assignments
Maintenance and Service Guide8–5
RJ-45 (network)
PinSignal
1Transmit +
2Transmit -
3Receive +
4Unused
5Unused
6Receive -
7Unused
8Unused 

8–6Maintenance and Service Guide
Connector pin assignments
Universal Serial Bus
 
PinSignal
1+5 VDC
2Data
3Data +
4Ground 

Maintenance and Service Guide9–1
9
Power cord set requirements
The wide range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts AC 
or from 220 to 240 volts AC.
The 3-conductor power cord set included with the computer meets the requirements for use in the country or region 
where the equipment is purchased.
Power cord sets for use in other countries and regions must meet the requirements of the country or region where 
the computer is used.
Requirements for...

9–2Maintenance and Service Guide
Power cord set requirements
Requirements for specific countries and regions
Country/region Accredited agencyApplicable note number 
Australia EANSW1
Austria OVE 1
Belgium CEBC 1
Canada CSA2
Denmark  DEMKO1
Finland FIMKO1
France UTE 1
Germany VDE1
Italy IMQ 1
Japan METI 3
The Netherlands KEMA 1
Norway NEMKO1
The Peoples Republic of China CCC5
South KoreaEK4
Sweden SEMKO1
Switzerland SEV1
Ta i w a n  BSMI 4
The United Kingdom BSI 1
The United States UL2
1. The flexible cord...

Maintenance and Service Guide10–1
10
Recycling
Battery
When the battery has reached the end of its useful life, do not dispose of the battery in general household waste. 
Follow the local laws and regulations in your area for computer battery disposal.
Display
ÅWARNING: The backlight contains mercury. Exercise caution when removing and handling the backlight to avoid damaging 
this component and causing exposure to the mercury.
ÄCAUTION: The procedures in this chapter can result in damage to display...