Polaroid FLM-4234BH, FLM-4034B, FLM-4232HM service manual Before Returning This Product to the User

4. Before Returning This Product to the User

Before returning this product to the user, always perform the following safety checks:

(4)Inspect all wiring to be sure no wires are pinched between the chassis or any metal parts.

(5)Inspect all protective devices for proper installation, including non-metallic controls, insulation materials, cabinet backs, compartment covers, and shields.

(6)Verify that no shock hazard exists on any part of the chassis, especially any metal components including cable connection points, chassis hardware, or antennas (if equipped). Use the following procedure:

a.Plug the AC cord directly into a 120 V AC outlet.

b.Create a test circuit consisting of a 1.5k ohm, 10 watt resistor paralleled by a 0.15 µF capacitor.

c.Using an AC voltmeter (sensitivity of 5000 ohm per volt or higher), measure the voltage drop across the test circuit between all exposed metallic parts and a known earth ground. Measurement points include antenna, metal cabinet parts, screw heads, and metal knobs or controls. Measurement points can vary slightly even between revisions of the same model, so always conduct a thorough review of the chassis to locate metal points that a user may touch.

d.Any voltage reading of 0.375 Vrms AC (0.25 mArms) or higher indicates a potential shock hazard. THIS CONDITION MUST BE

CORRECTED BEFORE RETURNING THE PRODUCT TO THE USER!

e.Repeat the above checks with the AC polarity reversed. A non-polarized adapter is required to reverse the polarity; DO NOT LEAVE THIS ADAPTER WITH THE USER! Under normal operation the product must use the proper polarity.

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