Блок логики освещения спального места FAW: Критический анализ 2 Основные компоненты для комфорта кабины

Добро пожаловать в это важное техническое руководство по Блок логики освещения спального места FAW (Сборка 564). Это полный, multi-function, interior illumination system for the sleeper berth of the FAW Jiefang CA4251P66K24T1A3E5 6×4 дизельный полуприцеп тягач. This assembly is a critical component for driver comfort, безопасность, and operational-readiness.

The Блок логики освещения спального места FAW является а “логика” system designed to provide effective, low-power illumination for the driver’s off-duty rest period. Его “логика” is to provide both bright, area-wide illumination and focused, low-level reading light, all while minimizing power draw from the truck’s batteries. This system consists of two ‘Sleeper lighting assembly’ (3714020-91W-C00) единицы.

Это подробное руководство является важным ресурсом для профессиональных технических специалистов., менеджеры автопарка, и специалисты по запчастям. Мы разберем всю Блок логики освещения спального места FAW в свой 2 core component types (в общей сложности 6 куски). We will analyze the critical “логика” of the lamp units, their likely LED construction, their integration with the cab’s electrical system, and the specific, vibration-proof ‘Self-tapping screw’ (CQ2714216F6) fasteners used to mount them.

Основной компонент 1: The ‘Sleeper Lighting Assembly’ (3714020-91W-C00)

Сердце Блок логики освещения спального места FAW is the ‘Sleeper lighting assembly’ (3714020-91W-C00). The parts list calls for two of these, which are typically mounted on the left and right sides of the sleeper berth to provide complete, overlapping coverage.

This component is a sealed, integrated lamp unit. Его “логика” is to provide two modes of light, both essential for a driver’s comfort and utility:

• **1. Main Illumination:** This is the primary “dome light” функция. It provides a bright, wide-angle, diffused light (often white) to fully illuminate the entire sleeper area. This is essential for the driver to find gear, get changed, or clean the cab.
• **2. Reading Light:** Many high-end Блок логики освещения спального места FAW units like this one also feature a secondary, focused “reading light” (often with a separate switch or a “second click” on the main switch). This is a low-power, “spotlight” beam that allows the driver to read a logbook or book in bed without illuminating the entire cab, which is critical if a co-driver is sleeping.

**Construction and “Логика” of Illumination:** The Блок логики освещения спального места FAW is almost certainly an **LED (Light Emitting Diode)** единица. Это критический момент “логика” choice for several reasons:

* **Power Consumption (The Primary Logic):** This is the most important factor. A driver runs these lights for hours with the engine *off*, relying solely on the truck’s batteries (see Assembly 556). A traditional incandescent bulb draws a high amount of amperage, which can easily drain the batteries overnight, ведущие к “no-start” situation and a costly service call. The Блок логики освещения спального места FAW, by using low-draw LEDs, provides hours of light for a fraction of the power, protecting the batteries and ensuring the truck will start in the morning. * **Vibration Resistance:** The cab of a truck is a high-vibration environment. The fragile filament of an incandescent bulb would constantly break, leading to high maintenance. An LED is a solid-state, “shock-proof” device with no filament, making it virtually immune to vibration. * **Heat:** An incandescent bulb gets dangerously hot, creating a significant fire risk in a confined sleeper cab filled with bedding, curtains, and paper. The Блок логики освещения спального места FAW, using cool-running LEDs, produces almost no heat, making it infinitely safer. * **Lifespan:** The LED light source is designed to last for tens of thousands of hours, often the entire life of the truck, making this a “fit-and-forget” maintenance component.

Основной компонент 2: Система крепления (CQ2714216F6)

The second component of the Блок логики освещения спального места FAW is the hardware that mounts it: the ‘Cross recessed pan head self-tapping screw’ (CQ2714216F6). The parts list calls for four of these, which is a pair of screws for each of the two ‘Sleeper lighting assembly’ единицы.

This is not a random choice; this fastener is a key part of the installation “логика” для Блок логики освещения спального места FAW.

**1. Self-Tapping “Логика”:** The “саморез” (Саморезы) design is a critical manufacturing and service feature. These screws are designed to be driven directly into an unthreaded hole in the truck’s “headliner” (the interior cab roof panel) or its underlying composite/metal support structure. The screw’s hardened threads cut (или “tap”) their own mating threads as they are installed. Этот “логика” creates an extremely tight, точный, and vibration-resistant fit without requiring a separate nut or pre-threaded boss, which would be impossible to access.

**2. Pan Head “Логика”:** The “pan head” (盘头) design is also a specific “логика” choice. This type of screw head is flat on the bottom with a wide diameter. When tightened, it distributes the clamping force over a wide area of the Блок логики освещения спального места FAW‘s plastic mounting flange. А “countersunk” (tapered) screw would act as a wedge and instantly crack the plastic housing. Этот “pan head” logic prevents stress fractures and ensures the lamp is held *snug* against the headliner, preventing any annoying “жужжит” или “rattles” while the driver is trying to sleep.

A failure of these simple fasteners would cause the Блок логики освещения спального места FAW to vibrate, eventually leading to a broken wire or the lamp detaching from the ceiling. Поэтому, using the correct OEM-specified fastener is essential for a long-lasting, тихий, and reliable repair.

The “Логика” of Integration: Power and Control

While not explicitly detailed in this parts list, а Блок логики освещения спального места FAW is part of a wider “логика” network within the cab’s electrical system. The ‘Sleeper lighting assembly’ (3714020-91W-C00) does not function in isolation.

**1. Power Source:** The Блок логики освещения спального места FAW is wired into the truck’s 24V “тело” схема, which is powered by the ‘Battery And Mounting Bracket Assembly’ (Сборка 556). Это “constant-hot” схема, meaning it has power even when the truck’s ignition key (the ‘FAW Start Switch’, Сборка 558) is in the “OFF” позиция. Это “логика” that allows a driver to use the lights while resting in the sleeper.

**2. Control Interface:** The “логика” of control is multi-faceted. The lamp assembly itself contains an integrated “local” выключатель (НАПРИМЕР., a push-button or a rocker switch) that allows the driver to operate it from the sleeper berth.

**3. Courtesy Light Integration:** Этот Блок логики освещения спального места FAW is also “logically” tied to the ‘Door Open Alarm Light Logic Assembly’ (Сборка 563). When the cab door is opened, the door’s plunger switch completes a ground circuit. This signal is sent to the Body Control Module (БЦМ), which then activates *all* interior “courtesy” огни, including this sleeper lamp. Этот “логика” обеспечивает “welcome” особенность, illuminating the entire cab interior so the driver can safely enter and see, before they even get to the switch on the Блок логики освещения спального места FAW сам.

FAW Sleeper Lighting Logic Assembly Parts List

В следующей таблице представлена ​​полная, подробная разбивка всех 4 component types identified in the ‘Sleeper Lighting Logic Assembly’ (564) схема трактора FAW CA4251P66K24T1A3E5.

Технические характеристики и контекст сборки

Технические характеристики Блок логики освещения спального места FAW are defined by its function as a low-power, high-reliability, multi-mode interior illumination system. The Блок логики освещения спального места FAW is a key component for driver comfort and safety.