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This document describes the Philips Colour Television Chassis TPM9.2HE LA. It serves as a comprehensive guide for service engineers, covering technical specifications, usage, maintenance, and fault-finding procedures.
The Philips Colour Television Chassis TPM9.2HE LA is designed for use in both consumer and institutional settings (iTV, such as hotels and hospitals). It supports various video and audio processing functions, including multi-standard digital video decoding (MPEG-2, H.264, MPEG-4), integrated DVB-T/DVB-C/DVB-S channel decoding, and integrated CI+. The chassis is capable of handling high-definition content and offers advanced picture processing features like motion accurate picture processing, extended colour gamut, colour booster, and improved MPEG artefact reduction. It also incorporates security features for customer-owned code/settings. The television supports IPTV and VOD experiences, and optional 2D dimming in combination with LED backlights for optimum contrast and power savings.
Chassis and Processor: The chassis is designated TPM9.2HE LA. Key components include the MT5366IVGG/B PBGA-479 TV Processor (for 30xx series) or MT5366CHHU/B LQFP-256 TV Processor (for 3117 series, AU/NZ).
Memory: It features DDR3 1.33 GHz (128 MByte x 2) and NAND Flash (256 MByte).
Tuner: The tuner varies by region: TDTK-G731D EUROP Tuner (for D series) or SUT-RE215TN EUROP Tuner (for D/Z series). It supports PAL/DVB-T, multi-media, and CEC functionality.
HDMI: The chassis includes HDMI 1.4, with a TMDS361BPAGR TQFP-64 HDMI Switch (for 30xx series) or IT6633E-T/CX LQFP-64 HDMI Switch (for 3117 series). HDMI features include +5V detection, stable clock detection, integrated EDID, RT control, HPD control, sync detection, and TMDS output control.
Audio: An STA381BWTR VQFN-48R Audio amplifier (for 30xx series) or AD82587-LE48NAY 12W LQFP-48 AUDIO Amplifier (for 3117 series) is used. It supports SPDIF Out and SCART L/R out.
Power Supply: The power architecture supports LED backlights (PSL, PSLS, PSDL) and conventional IPB. Output voltages include +5V-STANDBY, +12V, +Vsnd (+24V), +24V, and various display-specific voltages.
Connectivity: Rear connections include TV ANTENNA-In, EXT1 (Video RGB/YC-In, CVBS-In/Out, Audio-In/Out via SCART), Digital Audio-Out (Cinch), HDMI 1 (with ARC), HDMI 2, and PC IN:VGA. Side connections include Common Interface, USB2 2.0, USB1 2.0, and Headphone (Output). Ethernet (RJ45) is also available.
Display: The chassis supports flat panel screen resolutions and refresh rates, including 1366 × 768 @ 60Hz and 1920 × 1080 @ 60Hz.
Service Modes: The device offers several service modes:
Software Upgrading: The main software can be upgraded via a USB port. This allows for easy replacement of software images and updates.
Error Codes: The system provides unique error codes for activated (SW) protection, failing I2C devices, and general I2C errors. The last five errors are stored in an error buffer, which can be read on-screen or via the blinking LED procedure.
Safety Precautions: During repair, it is mandatory to connect the TV to the Mains/AC Power via an isolation transformer. Only identical safety components (marked with a triangle) should be replaced. After repair, the set must be returned to its original condition, including correct wire dressing and insulation checks. Electrical DC resistance between the Mains/AC Power plug and the secondary side must be checked.
ESD Precautions: All ICs and semiconductors are susceptible to electrostatic discharges. Technicians must be connected to the set's mass with a wristband with resistance, and tools should also be at the same potential.
Lead-free Soldering: Only lead-free soldering tin should be used. Solder tools must reach a solder-tip temperature of at least 400°C and stabilize at 360°C - 380°C. Heating time should not exceed ~4 seconds. Mixing lead-free and leaded soldering tin/parts is discouraged.
BGA (Ball Grid Array) ICs: Specific temperature profiles are required for BGA-ICs, which are provided in the IC Data Sheet information section.
NVM Editor: The NVM editor in SAM mode allows direct modification of NVM contents, but caution is advised to avoid incorrect settings. Default NVM values can be uploaded using ComPair after NVM replacement or corruption.
Display Option Code Selection: After SSB or display exchange, the correct display option code must be set to prevent "no display" issues.
Mechanical Instructions: Detailed instructions are provided for cable dressing, service positions, and assembly/panel removal (including rear cover, SSB, PSU, speakers, keyboard control unit, stand bracket, IR/LED board, and LCD panel). It is crucial to remount all screws at their original positions during re-assembly to prevent damage.
Fault Finding and Repair Tips: General tips include checking for correctly mounted components, correct values, and no bad solder joints. Before any fault finding, checking correct options is essential. Specific tips are provided for "no picture" scenarios (checking display code), unstable HDMI picture (checking EDID data), and audio amplifier issues (ensuring proper cooling for Class D-IC).
Chassis Overview: Refer to the Block Diagrams chapter for PWB/CBA locations.
General
