HP 17 Notebook – Disassembling procedure

How to remove the battery - How to remove the display unit -  HP 17 Notebook – Disassembling procedure

Disassembling procedure 

How to remove Battery

Before removing the battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
Remove the battery:
1. Turn the computer upside down on a flat surface.
2. With the battery bay toward you, slide the battery lock latch (1) to unlock the battery and then slide the battery release latch (2) to release the battery.

3. Pivot the battery (3) upward and then remove it from the computer (4).

How to remove Optical drive

Before removing the optical drive, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery
Remove the optical drive:
1. Remove the screw (1) that secures the optical drive to the computer.

2. Use a flat tool to press on the optical drive bracket tab (2) to release the optical drive.

3. Remove the optical drive from the computer.

How to remove Base enclosure

Before disassembling the computer, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery
5. Remove the optical drive
Remove the base enclosure:
1. Turn the computer face down, and remove the rubber feet (1), the two screws (2) and lift the end caps (3).

2. Remove the ten Phillips screws.

3. Remove five screws (1) around the battery area, three broadhead screws (2) in the optical drive bay and one screw (3) near the display hinge.

4. Turn the computer right side up and carefully remove the top cover.

5. Carefully disconnect the following cables:

Power button cable (1)
Keyboard cable (2)
TouchPad cable (3)
Lift the top cover (4) to remove it from the computer.

How to remove Display panel

Before removing the display panel, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4. Remove the battery
5. Remove the optical drive

6. Remove the top cover from the base enclosure
Remove the display panel:
1. Open the computer.
2. Disengage the display cable (1) and disconnect the display connector (2) on the left side base of the display panel.

3. On the right side, disconnect the WLAN cable (3) and carefully remove the cable from the retaining tabs (4).

4. Remove the power connector cover by removing the two Phillips screws (1) and lifting the cover (2).

5. Remove the six Phillips screws (1) on the left and one broadhead screw (2) on the right side base of the display panel. Lift the panel up (3).

6. Open the panel cover (1), swivel the display panel hinges (2) on both sides and then tilt up the display panel hinge (3) to release it.

7. Loosen the edges of the back cover (1), (2), and (3) from all four sides of the display bezel and lift the display panel (4).

8. To remove the panel, remove the four Phillips screws (1) and any adhesive that secures the display panel to the back cover and lift the display panel (2) carefully.

9. If it is necessary to remove the display panel cable or access the webcamera and microphone, follow these steps. With the display bezel upside down, disconnect the webcamera/microphone connectors (1) and from the routing channel built into the back cover.

Carefully release the cable from the channel guides, the guides in the display hinge, and remove the display panel cable (2). Lift the cable to remove it.

10. On select models, removing the panel also requires disengaging the panel from the back cover latch. To disconnect the display panel, carefully rotate the display panel (1) to open it. Push upward on the connection latch (2)panel and then disengage the panel from the back cover (3)

Rolsen RL-26B01- how to enter the service mode, adjustments - Chassis MST9E19

Many electrical and mechanical parts in the chassis have special safety-related characteristics. These characteristics are often passed unnoticed by a visual inspection. When replacement parts are required, be sure the service technician uses replacement parts specified by us that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock and injury to persons or other hazards. This LCD TV product should be situated away from heat source such as radiation, stoves, or other product that produce heat.

This Panel is a TFT LCD module supports 1366 x 768 WXGA format and can display true 16.7M colors (8-bit colors).

Service Mode and Adjustment

Method-1 Use the remote control, first open MAIN MENU with MENU button, and choose PICTURE with the CHANNEL UP/DOWN button, then choose the Brightness with VOLUME UP, while Brightness value is 50, press 0,5,3,2. You can enter factory menu.

Method-2 Use the remote control, first open MAIN MENU with MENU button, and choose SOUND with the CHANNEL UP/DOWN button, then choose the Balance with VOLUME UP, while Balance value is 0, press 0,5,3,2. You can enter factory menu.

Factory Menu
White Balance
Auto Test
Auto Calibration
LOGO
OSD Language
Country
Option
Factory Init
Test Pattern
Version:

White Balance
R DRV 10
G DRV 10
B DRV 10
R CUT 128
G CUT 128
B CUT 128
BRIGHT_H 80
CONTRAST _H 80
BRIGHT_L 40
CONTRAST_L 40

Auto Calibration
Auto Color
Color Temp. Standard
RED COLOR 128
GREEN COLOR 128
BLUE COLOR 128

LOGO
NULL
HISENSE
WELCOME

Option

SOURCE	TV
BRIGHT 0	10
BRIGHT 50	100
BRIGHT 100	135
CONTRAST 0	60
CONTRAST 50	125
CONTRAST 100 155
TOFAC	M
HDMI Cable	Standard

Factory Initialization
QingDao
HuangDao
Guiyang
Hungary
France
Austria
CLEAR PROTECTLY
CLEAR UNPROTECTLY

Design Menu
Picture Mode
Sound Mode
Sound Settings
Power Save
PIP Option
EMI
MOVESHARPNESS
LipSync

Picture Mode

Standard	Brightness	50
Contrast	50
Colour	50
Bright	Brightness	60
Contrast	60
Colour	55
Soft	Brightness	45
Contrast	45
Colour	45

Sound Mode

Standard	120Hz	12
500Hz	10
1.5KHz	11
5KHz	8
10KHz	15
Music	120Hz	19
500Hz	11
1.5KHz	12
5KHz	14
10KHz	20
Speech	120Hz	4
500Hz	10
1.5KHz	12
5KHz	7
10KHz	5

Sound Settings
VOLUME 0 128
VOLUME 1 79
VOLUME 20 36
VOLUME 40 31
VOLUME 100 17
TVPRE SCALER 2
VOLUME SCALER 0

DLM32C1 SL-223M chassis - Daewoo LCD TV Service mode, connector voltages, Power board circuit diagram

Daewoo DLM-26C2, DLM-26C3, DLM-32C1D, DLM-32C2, DLM-32C3, DLM-37C3, DLM-42C1

PAL, PAL-M, PAL-N,  NTSC, NTSC4.43,  SECAM

Entering SERVICE MODE

Using the Service Remote controller, you can enter service mode directly.

Adjustment REMOCON and EEPROM initial DATA
A. The adjustment Specification use the SERVICE REMOCON R-34SVC
(S/N: 48B3034SVC)
B. Adjustment DATA

Description of SERVICE MODE ITEM
A. S1(1) : Heat-Run Key
B. S2(2) : Gumi Channel Map Write
C. S3(3) : Volume Test
=> This key can check sound
D. S4(4) : EDIE WRITE
=> Using this key, you can update EDID data.
E. S5(5) : PANEL TEST
=> Using this key, you can test problem of PANEL, as confirm white pattern, red pattern, blue pattern, green pattern.
F. S6(6) : PICTURE TEST
=> Using this key, you can test brightness, contrast and color.
G. S7(7) : DEMPOL CHANNEL MAP WRITE
H. S8(8) : EEPROM Erase and White Balance adjustment
=> Using this key, you can erase EEPROM data and adjust White balance.
I. S9(9) : Device control
=> This key only use for R&D.
J. S10(10) : Option key
=> Using this key, you can adjust SSC, Dimming, Panel Type, Control key and etc.
K. S11(11) : I2C STOP key
=> This key only use for R&D.
L. S12(SLEEP) : Shipping key
=> Using this key, you can set up at shipping mode.

To adjust WHITE BALANCE, refer to below process.
6-1. Insert white pattern to component input Signal Generator : 802BT (By Quantum Data)
Resolution : 1280x720p @60Hz,
Pattern : Grey Scale (11 step)
6-2. Confirm ‘dimming’ in service mode (=s10) 32C3 = 0, 26C3 = 255
6-3. Attach white balance meter(CA-210) on center of Panel
6-4. Press the service key s8
6-5. Adjust white balance with valiable R.G.B cutoff / drive.
Color coordinates

X = 0.280 0.01, Y = 0.285 X = 0.280 0.01, Y = 0.290

0.01, cd/m2 = 50cd/m2 0.01, cd/m2 = 300cd/m2

6-6. Press s8 buttorn to escape SERVICE MODE
The difference of LCD Panel is not so much, therefore we don’t adjust white balance.

POWER PCB voltages

Other connector voltages

Power board [SMPS] schematic 

Service mode

Typical Symptoms of PCBs problem or bad connection
A. Symptom of initial latch up
- Define initial latch up : When turn on the power, both LEDs light up red and TV is not working.
- Repairing method : This is typical symptom when ROM(ICU3) is incorrectly connected at socket. So if you find this symptom, you must try to that ROM(ICU3) and socket have correct contact.
- As this method, TV set is not repaired, replace MAIN PCB.
B. Symptom of No image when LED and Back Light are working.
- Define No image : LED and BACK LIGHT of panel are correctly working but any image does not display.
- Repairing method : This is typical symptom when LVDS cable incorrectly connects.
So if you find this symptom, check LVDS connection.
- As this method, TV set is not repaired, replace Main or Sub PCB.
C. Representative Symptom caused by bad Connection between PCBs
=> Note: Dust or extraneous material may cause bad connections. Most of the time, applying soft brush, AIR FRESHIER, or breath to clean dust or extraneous materials can solve it. And then reassemble the Connector.