MSI CX70 - User Manual

This document outlines the disassembly procedures for the CX70/CR70 (MS-1755) device, providing a step-by-step guide for technicians or users who need to access internal components for repair, replacement, or maintenance. The device appears to be a laptop or a similar portable computing unit, given the components described such as a battery pack, bottom door, HDD module, thermal kit, CPU, DRAM, wireless module, ODD module, upper and lower cases, and an LCD module.

The disassembly process is structured logically, starting with external components and progressing to internal ones. Each step is accompanied by visual aids (implied by the "pic shows" or "left picture shows" references) to ensure clarity and accuracy during the procedure. This systematic approach is crucial for preventing damage to the device and ensuring that all components are handled correctly.

Function Description:

The CX70/CR70 (MS-1755) is a portable computing device, likely a laptop, designed for general-purpose use. Its modular construction allows for the replacement or upgrade of various internal components.

Battery Pack: Provides portable power to the device, enabling operation without a direct power source.
Bottom Door Assy: Serves as a protective cover for internal components, allowing easy access to user-serviceable parts like the HDD, RAM, and potentially the wireless module.
HDD Module: Stores the operating system, applications, and user data. It is a critical component for the device's functionality.
Thermal-Kit, CPU, DRAM, and Wireless:
- Thermal-Kit: Manages heat generated by the CPU and other components, ensuring stable operation and preventing overheating.
- CPU (Central Processing Unit): The "brain" of the device, responsible for executing instructions and performing calculations.
- DRAM (Dynamic Random-Access Memory): Provides temporary storage for data that the CPU is actively using, influencing the device's multitasking capabilities and overall speed.
- Wireless Module: Enables wireless connectivity (Wi-Fi, Bluetooth), allowing the device to connect to networks and other peripherals without cables.
ODD Module (Optical Disc Drive): Allows the device to read and write optical discs (CDs, DVDs), though this component is becoming less common in modern laptops.
Upper Case and Lower Case: Form the main chassis of the device, protecting internal components and providing structural integrity. The upper case typically includes the keyboard and touchpad.
LCD Module Assy: The display unit of the device, allowing users to interact visually with the operating system and applications.

Usage Features:

The disassembly guide primarily focuses on the internal structure and maintenance, rather than end-user operational features. However, the presence of certain modules implies specific usage features:

Portability: The design, with a battery pack and modular components, indicates a portable device.
Data Storage: The HDD module provides ample space for user data and system files.
Wireless Connectivity: The wireless module enables internet access and peripheral connections without physical cables.
Optical Media Support: The ODD module, if present, allows for the use of CDs/DVDs for software installation, data backup, or media playback.
User Interaction: The keyboard and touchpad (part of the upper case) are the primary input methods for the device.
Visual Output: The LCD module provides the visual interface for the user.

Maintenance Features:

The disassembly guide is essentially a manual for device maintenance, focusing on component removal and replacement. Key maintenance features include:

Modular Design: The device is designed with easily separable modules (battery, HDD, ODD, RAM, wireless card, CPU, thermal kit, LCD) which simplifies troubleshooting, repair, and upgrades.
Screw-Based Assembly: Most components are secured with screws of various sizes, making disassembly and reassembly straightforward with the appropriate tools. The guide specifies screw types (e.g., M2.55.5mm, M2.54.5mm, M23.5mm, M23mm) and their locations, which is critical for proper reassembly and preventing stripped threads.
Torque Specifications: The guide provides specific torque values (e.g., 1.5-2.0Kgf-cm, 2.0-2.5Kgf-cm, 2.5-3.0Kgf-cm, 2.8-3.2Kgf-cm) for tightening screws. This is a crucial maintenance feature, as it ensures that components are securely fastened without being overtightened, which could damage the screw or the component.
Clear Component Identification: Each step clearly identifies the component being removed and often provides its Part Number (P/N) and Quantity (Qty), which is invaluable for ordering replacement parts.
Step-by-Step Instructions: The detailed, sequential instructions for removing each component minimize the risk of damage during disassembly. For example, the battery pack removal involves specific "unlock" and "release" buttons, and the keyboard removal requires releasing hooks in a particular order.
Cable Management: The guide highlights the removal of various cables (FAN cable, FFC, LVDS cable, power cable, Bluetooth cable, camera cable, wireless card antenna), indicating that proper disconnection and reconnection are part of the maintenance process.
Thermal Paste Application (Implied): The removal of the thermal kit and CPU implies that during reassembly, new thermal paste would need to be applied to ensure efficient heat transfer, although this specific step is not explicitly detailed in the removal instructions.
Accessibility to Key Components: The design allows access to critical components like RAM, HDD, CPU, and wireless card, enabling users to perform upgrades (e.g., increasing RAM, replacing HDD with SSD) or repairs.
LCD Module Disassembly: The detailed steps for disassembling the LCD module, including removing cover rubber, bezel, hinge caps, hinges, camera cable, and LVDS cable, indicate that the display unit itself is serviceable, allowing for replacement of individual display components rather than the entire module.
Screw Specification Table: The inclusion of a "screws specification" section with photos, screw types, and corresponding labels (colors) is an excellent maintenance feature. It helps users identify the correct screws for each location during reassembly, preventing incorrect screw usage that could lead to damage or improper fastening. This table categorizes screws by their dimensions (e.g., M2.5L5.5MM, M2.5L4.5MM, M2L3MM, M2L3.5MM) and color (black, white), and associates them with specific assembly areas (Bottom Assy, Thermal-Kit, Wireless Card Assy, NB, LCD Hinge Assy, LCD Hinge Cap Assy, LCD Module Assy). This level of detail is critical for successful maintenance.

MSI CX70 Specifications

General

Bus type	DMI
Stepping	L1
Tjunction	105 °C
Processor cache	3 MB
Processor cores	2
Processor model	i5-3230M
System bus rate	5 GT/s
Processor family	Intel® Core™ i5
Processor series	Intel Core i5-3200 Mobile series
Processor socket	BGA 1023
Processor threads	4
Processor codename	Ivy Bridge
Processor frequency	2.6 GHz
Processor cache type	Smart Cache
Processor lithography	22 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	3.0
Processor boost frequency	3.2 GHz
Processor operating modes	64-bit
ECC supported by processor	No
PCI Express configurations	1x16, 2x8, 1x8+2x4
Thermal Design Power (TDP)	35 W
CPU multiplier (bus/core ratio)	26
Maximum number of PCI Express lanes	16
Motherboard chipset	Intel HM76 Express
Internal memory	8 GB
Memory clock speed	1600 MHz
Internal memory type	DDR3-SDRAM
Maximum internal memory	- GB
HDD speed	- RPM
HDD interface	SATA
Storage media	HDD
Optical drive type	DVD Super Multi
Card reader integrated	Yes
Total storage capacity	500 GB
Compatible memory cards	MS PRO, MS PRO Duo, MS PRO Duo Mark 2, SD, SDHC, SDXC
Number of HDDs installed	1
Touchscreen	-
Display diagonal	17.3 \
Display resolution	1600 x 900 pixels
Native aspect ratio	16:9
On-board graphics card ID	0x166
Discrete graphics card model	NVIDIA® GeForce® GT 640M
On-board graphics card model	Intel® HD Graphics 4000
Discrete graphics card memory	2 GB
Discrete graphics memory type	GDDR3
On-board graphics card family	Intel® HD Graphics
On-board graphics card base frequency	650 MHz
On-board graphics card dynamic frequency (max)	1100 MHz
Audio system	HD
Video capturing speed	30 fps
Front camera resolution	1280 x 720 pixels
4G standard	WiMAX
Wi-Fi standards	802.11a, 802.11b, 802.11g
Bluetooth version	4.0
Cabling technology	10/100/1000Base-T(X)
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Mobile network generation	4G
Charging port type	DC-in jack
Headphone connectivity	3.5 mm
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
eSATA/USB 2.0 ports quantity	0
Keyboard layout	QWERTY
Pointing device	Pointing Stick
Keyboard number of keys	102
Operating system installed	Windows Vista Home Premium
Form factor	Clamshell
Product type	Laptop
Product color	Black, Grey
Processor code	SR0WX
Processor ARK ID	72056
Processor package size	31 x 24 (BGA1023) mm
Supported instruction sets	AVX
Intel Identity Protection Technology version	1.00
Battery life (max)	- h
Number of battery cells	6
AC adapter power	65 W