Logitech ILLUMINATED KEYBOARD K740 Repair

The Illuminated Keyboard K740 is a full-size wired keyboard from Logitech featuring adjustable backlit keys for comfortable typing day or night. It uses Logitech's PerfectStroke key system and an integrated soft-touch palm rest to provide a quiet, fluid typing feel. The design emphasizes longevity and is constructed from durable materials with reinforced internal components to withstand extended daily use. Key features include white LED illumination, full-size layout with numeric keypad, and an integrated USB connection.

The Logitech ILLUMINATED KEYBOARD K740 can be identified by its model number (M/N Y-UY95). The model label is on the underside of the unit. The device’s serial number (S/N) appears nearby on the same label.

• Form Factor: Full-size (104-key) with numeric keypad
• Layout: English (US) QWERTY
• Switch Type: Logitech PerfectStroke scissor-style membrane keys (low-profile)
• Key Switch Manufacturer: Logitech (PerfectStroke key system, Logitech-designed membrane/scissor mechanism)
• Backlighting: Adjustable white LED backlighting
• Connectivity: Wired USB (integrated USB Type-A cable)
• Palm Rest: Integrated soft-touch palm rest
• Model / SKU / MPN: Model: Illuminated Keyboard K740; SKU / MPN: 920-000914; Product ID: k740-backlit-illuminated
• Materials: Constructed from durable materials with reinforced internal components (plastic housing with robust internal supports)
• Compatibility: Compatible with Windows and macOS for standard keyboard functions

Common repair-relevant faults include backlight failure, individual unresponsive or sticky keys, and cable damage. Diagnose by testing the USB connection on another computer, verifying software/driver issues, removing keycaps to inspect for debris or switch damage, and opening the case to inspect the LED strip, PCB traces, and solder joints.

For additional troubleshooting help, visit: Support and product help available at https://support.logi.com/; product-specific support page for the K740 is https://support.logi.com/hc/en-us/articl....

Refer to Logitech warranty information for region-specific terms; typical limited hardware warranty varies by region (check Logitech warranty page).

• https://www.logitech.com/en-us/shop/p/k7...
• https://support.logi.com/hc/en-us/articl...