IDEK MF-8221 (New): The digital buttons are hidden in the sliding drawer, providing energy-saving functions such as automatic size positioning, automatic contrast sensing, and automatic shutdown sensing. It supports color temperature selection (WB1 9300K, WB2 6500K) and user color tone storage.
HITACHI HM-4821-D (CE certified): adopts menu style digital adjustment, supports three adjustable levels of moir é suppression and color temperature, RGB independent gain adjustment, and has complete power management indicators.
The touch screen components can be interchanged between different displays by simply replacing the corresponding borders and fixing buttons.
Maintenance and troubleshooting
Anti static measures: All circuit boards must be plugged and unplugged after power failure, and the operator must wear a grounding wristband. The board can only be held at the edges and must be stored in a conductive bag.
Air filter screen: a washable foam filter screen (part number 51201201 ‑ 600) is set above the multi node module of each tower. It is recommended to clean the harsh environment once a month and the office environment every six months. When cleaning, it is necessary to cut off the main power supply of the tower (unplug the power cord), remove the drive bracket, take out the filter screen, wash it by hand with neutral detergent, air dry it, and reset it.
Fault diagnosis:
Front panel LED: Each node processor board is equipped with a red/green LED and two digital tubes. During power on self-test, the red LED briefly lights up, and after success, the green LED stays on, and the digital display shows the address of this node (1-8). If the red light stays on, record the fault code.
Power/Fan Indication: The power module inside the tower has POWER OK (green), ERROR (red), and FAN ALARM (red) indicator lights. Under normal conditions, only POWER OK lights up.
Hard drive failure: The bottom hard drive power supply of Tower 2 comes with a circuit breaker. If HM does not work, check if the switch trips.
Hardware Verification Testing System (HVTS): HVTS is a set of diagnostic firmware that can be loaded from a cartridge disk and is used to verify subsystems such as LCN, keyboard, video, hard drive, memory, CLI, and system clock. Execute the CON command to output a node configuration list, and execute the REV command to view hardware/firmware versions.
ORU: Section 6.5 of the manual lists nearly 70 types of spare parts, including:
Display and touch screen (51196075-100, etc.)
Keyboard (51401577-100 operator, 51400975-100 engineer)
Hard drive (51196680-100 512 MB)
Circuit board (K2LCN 51401551-XXX, TP485 51304776-100/-200/-300/-400)
CLI interface board (80360206-00151196701-100)
Power supply, fan components, cable components, etc.
