Philips MX975D, Service Manual

Page: 7 / 116

IMPLOSION
X-RADIATION
PICTURE TUBE REPLACEMENT
PARTS REPLACEMENT
WARNING
Before removing the CRT anode cap, turn the unit OFF and short the HIGH VOLTAGE to the CRT DAG
ground.
SERVICE NOTE:
The CRT DAG is not at chassis ground.
TV-VCR COMBI SAFETY NOTES
IMPORTANT SAFETY PRECAUTIONS
Prior to shipment from the factory, our products are strictly inspected for recognized product safety and
electrical codes of the countries in which they are to be sold. However, in order to maintain such
compliance, it is equally important to implement the following precautions when a set is being serviced.
SAFETY PRECAUTIONS FOR TV CIRCUITS
1. Before returning an instrument to the customer, always make a safety check of the entire instrument,
including, but not limited to, the following items:
a. Be sure that no built-in protective devices are defective or have been defeated during servicing.
(1) Protective shields are provided on this chassis to protect both the technician and the customer.
Correctly replace all missing protective shields, including any removed for servicing convenience. (2)
When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all
protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers,
adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not
operate this instrument or permit it to be operated without all protective devices correctly installed
and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable
for any resulting damage.
b. Be sure that there are no cabinet openings through which an adult or child might be able to insert
their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1)
spacing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots,
and (3) an improperly fitted and/or incorrectly secured cabinet back cover.
c. Do a
LEAKAGE CURRENT CHECK
ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK
HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER