This maintenance manual details the appearance images, product specifications, internal module introduction, common fault repair and factory debugging of L42N1 TV.
This service manual provides detailed information for technicians working on the Haier L42N1 television. It includes product specifications, external and internal module diagrams, and step‑by‑step procedures for fault diagnosis and factory calibration.
The document also lists all connector types, supported video and audio formats, and configurable menu options such as channel presets, picture modes, and power‑saving features. Factory menu settings and E2PROM reset instructions are included for advanced servicing. This manual is written in Chinese.
| Input voltage | 100‑240 V, 50/60 Hz |
|---|---|
| Power consumption (active) | <250 W |
| Power consumption (standby) | <3 W |
| Speaker impedance | 8 Ω |
| Antenna input impedance | 75 Ω (VHF/UHF) |
| Screen size (diagonal) | 1067.308 mm |
| Brightness | 500 cd/m² |
| Contrast ratio | 1200 : 1 |
| Response time | 5 ms |
| Preset channels | 256 |
The L42N1 television supports 256 preset channels.
Standby power consumption is less than 3 W.
The screen uses a 16:9 aspect ratio.