Service Manuals, User Guides, Schematic Diagrams or docs for : Philips TV-VCR MC132EMG service
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TV-VCR Combination MC132EMG/17
Third Generation
Service
Service
Service
Service Manual
Contents Survey of versions:
Chapter /17 NTSC
Sec. 1: Adjustment Procedures
Schematic Diagrams and CBA's
Exploded Views
Mechanical and Electrical Parts Lists
Sec. 2: Standard Maintenance
Mechanism Alignment Procedures
Disassembly / Assembly of Mechanism
Deck Exploded Views
Deck Parts List
This service manual is for MC132EMG/17 Third
Generation model, which is different from the rating label
previous generation MC132EMG/17 models.
For Third Generation model, the serial number begins
with DD5Axxxxxxxxxx.
Refer to the rating label illustration at right. serial number
c Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a retrieval
system or transmitted, in any form or by any means, electronic, mechanical, photocopying,
or otherwise without the prior permission of Philips.
Published by FU-KC 0524 Service AV Systems Printed in The Netherlands Subject to modification EN 3139 785 31370
MAIN SECTION
TV-VCR Combination
Sec. 1: Main Section
I Adjustment Procedures
I Schematic Diagrams and CBA's
I Exploded Views
I Mechanical and Electrical Parts List
TABLE OF CONTENTS
IMPORTANT SAFETY PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1
STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1
PREPARATION FOR SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1
OPERATING CONTROLS AND FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1
CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1
ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1
HOW TO INITIALIZE THE TV/VCR COMBINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1
SCHEMATIC DIAGRAMS / CBA'S AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1
SYSTEM CONTROL TIMING CHARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1
IC PIN FUNCTION DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1
LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1
ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1
MECHANICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17-1
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 Circuit Leakage Current for Appliances and
Underwriters Laboratories (UL) 1410, (50.7).
1. Before returning an instrument to the With the instrument AC switch first in the on
customer, always make a safety check of the position and then in the off position, measure
entire instrument, including, but not limited to, the from a known earth ground (metal water pipe,
following items: conduit, etc.) to all exposed metal parts of the
a. Be sure that no built-in protective devices are instrument (antennas, handle brackets, metal
defective and have been defeated during cabinet, screw heads, metallic overlays, control
servicing. (1) Protective shields are provided shafts, etc.), especially any exposed metal
on this chassis to protect both the technician parts that offer an electrical return path to the
and the customer. Correctly replace all missing chassis. Any current measured must not
protective shields, including any removed for exceed 0.5 milli-ampere. Reverse the
servicing convenience. (2) When reinstalling instrument power cord plug in the outlet and
the chassis and/or other assembly in the repeat the test.
cabinet, be sure to put back in place all
protective devices, including but not limited to,
READING SHOULD
nonmetallic control knobs, insulating
NOT BE ABOVE 0.5 mA
fishpapers, adjustment and compartment
covers/shields, and isolation resistor/capacitor LEAKAGE
networks. Do not operate this instrument or DEVICE CURRENT
permit it to be operated without all BEING TESTER
protective devices correctly installed and TESTED + _
functioning. Servicers who defeat safety TEST ALL EXPOSED
features or fail to perform safety checks METAL SURFACES
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 ALSO TEST WITH
voltage. Such openings include, but are not PLUG REVERSED
limited to, (1) spacing between the picture tube USING AC
ADAPTER PLUG EARTH
and the cabinet mask, (2) excessively wide
AS REQUIRED GROUND
cabinet ventilation slots, and (3) an improperly
fitted and/or incorrectly secured cabinet back
cover. ANY MEASUREMENTS NOT WITHIN THE
LIMITS SPECIFIED HEREIN INDICATE A
c. Antenna Cold Check - With the instrument AC
POTENTIAL SHOCK HAZARD THAT MUST
plug removed from any AC source, connect an
BE ELIMINATED BEFORE RETURNING THE
electrical jumper across the two AC plug
INSTRUMENT TO THE CUSTOMER OR
prongs. Place the instrument AC switch in the
BEFORE CONNECTING THE ANTENNA OR
on position. Connect one lead of an ohmmeter
ACCESSORIES.
to the AC plug prongs tied together and touch
the other ohmmeter lead in turn to each tuner e. X-Radiation and High Voltage Limits -
antenna input exposed terminal screw and, if Because the picture tube is the primary
applicable, to the coaxial connector. If the potential source of X-radiation in solid-state TV
measured resistance is less than 1.0 megohm receivers, it is specially constructed to prohibit
or greater than 5.2 megohm, an abnormality X-radiation emissions. For continued
exists that must be corrected before the X-radiation protection, the replacement picture
instrument is returned to the customer. Repeat tube must be the same type as the original.
this test with the instrument AC switch in the off Also, because the picture tube shields and
position. mounting hardware perform an X-radiation
protection function, they must be correctly in
d. Leakage Current Hot Check - With the
place. High voltage must be measured each
instrument completely reassembled, plug the
time servicing is performed that involves B+,
AC line cord directly into a 120 V AC outlet. (Do
horizontal deflection or high voltage. Correct
not use an isolation transformer during this
operation of the X-radiation protection circuits
test.) Use a leakage current tester or a
also must be reconfirmed each time they are
metering system that complies with American
serviced. (X-radiation protection circuits also
National Standards Institute (ANSI) C101.1
1-1-1 TVVCRN_ISP
may be called "horizontal disable" or "hold b. Some TV receiver chassis normally have 85V
down.") Read and apply the high voltage limits AC(RMS) between chassis and earth ground
and, if the chassis is so equipped, the regardless of the AC plug polarity. This chassis
X-radiation protection circuit specifications can be safety-serviced only with an isolation
given on instrument labels and in the Product transformer inserted in the power line between
Safety & X-Radiation Warning note on the the receiver and the AC power source, for both
service data chassis schematic. High voltage is personnel and test equipment protection.
maintained within specified limits by close c. Some TV receiver chassis have a secondary
tolerance safety-related components/ ground system in addition to the main chassis
adjustments in the high-voltage circuit. If high ground. This secondary ground system is not
voltage exceeds specified limits, check each isolated from the AC power line. The two
component specified on the chassis schematic ground systems are electrically separated by
and take corrective action. insulation material that must not be defeated or
2. Read and comply with all caution and altered.
safety-related notes on or inside the receiver 6. Observe original lead dress. Take extra care to
cabinet, on the receiver chassis, or on the picture assure correct lead dress in the following areas: a.
tube. near sharp edges, b. near thermally hot parts-be
3. Design Alteration Warning - Do not alter or add sure that leads and components do not touch
to the mechanical or electrical design of this TV thermally hot parts, c. the AC supply, d. high
receiver. Design alterations and additions, voltage, and e. antenna wiring. Always inspect in
including, but not limited to circuit modifications all areas for pinched, out of place, or frayed wiring.
and the addition of items such as auxiliary audio Check AC power cord for damage.
and/or video output connections, might alter the 7. Components, parts, and/or wiring that appear to
safety characteristics of this receiver and create a have overheated or are otherwise damaged
hazard to the user. Any design alterations or should be replaced with components, parts, or
additions will void the manufacturer's warranty and wiring that meet original specifications.
may make you, the servicer, responsible for Additionally, determine the cause of overheating
personal injury or property damage resulting and/or damage and, if necessary, take corrective
therefrom. action to remove any potential safety hazard.
4. Picture Tube Implosion Protection Warning - 8. Product Safety Notice - Some electrical and
The picture tube in this receiver employs integral mechanical parts have special safety-related
implosion protection. For continued implosion characteristics which are often not evident from
protection, replace the picture tube only with one visual inspection, nor can the protection they give
of the same type number. Do not remove, install, necessarily be obtained by replacing them with
or otherwise handle the picture tube in any components rated for higher voltage, wattage, etc.
manner without first putting on shatterproof Parts that have special safety characteristics are
goggles equipped with side shields. People not so identified by a # on schematics and in parts lists.
equipped must be kept safely away while picture Use of a substitute replacement that does not
tubes are handled. Keep the picture tube away have the same safety characteristics as the
from your body. Do not handle the picture tube by recommended replacement part might create
its neck. Some "in-line" picture tubes are equipped shock, fire, and/or other hazards. The Product's
with a permanently attached deflection yoke; Safety is under review continuously and new
because of potential hazard, do not try to remove instructions are issued whenever appropriate.
such "permanently attached" yokes from the Prior to shipment from the factory, our products
picture tube. are strictly inspected to confirm with the
5. Hot Chassis Warning - recognized product safety and electrical codes of
a. Some TV receiver chassis are electrically the countries in which they are to be sold.
connected directly to one conductor of the AC However, in order to maintain such compliance, it
power cord and maybe safety-serviced without is equally important to implement the following
an isolation transformer only if the AC power precautions when a set is being serviced.
plug is inserted so that the chassis is
connected to the ground side of the AC power Precautions during Servicing
source. To confirm that the AC power plug is A. Parts identified by the # symbol are critical for
inserted correctly, with an AC voltmeter, safety.
measure between the chassis and a known Replace only with part number specified.
earth ground. If a voltage reading in excess of B. In addition to safety, other parts and assemblies
1.0V is obtained, remove and reinsert the AC are specified for conformance with regulations
power plug in the opposite polarity and again applying to spurious radiation. These must also be
measure the voltage potential between the replaced only with specified replacements.
chassis and a known earth ground. Examples: RF converters, RF cables, noise
blocking capacitors, and noise blocking filters, etc.
1-1-2 TVVCRN_ISP
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulators for transistors.
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before
soldering.
F. Observe that the wires do not contact heat
producing parts (heat sinks, oxide metal film
resistors, fusible resistors, etc.)
G. Check that replaced wires do not contact sharp
edged or pointed parts.
H. When a power cord has been replaced, check that
5~6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations.
J. Use care that foreign objects (screws, solder
droplets, etc.) do not remain inside the set.
K. Crimp type wire connector
When replacing the power transformer in sets
where the connections between the power cord
and power transformer primary lead wires are
performed using crimp type connectors, in order to
prevent shock hazards, perform carefully and
precisely the following steps.
Replacement procedure
1) Remove the old connector by cutting the wires
at a point close to the connector.
Important: Do not re-use a connector (discard
it).
2) Strip about 15 mm of the insulation from the
ends of the wires. If the wires are stranded,
twist the strands to avoid frayed conductors.
3) Align the lengths of the wires to be connected.
Insert the wires fully into the connector.
4) Use the crimping tool to crimp the metal sleeve
at the center position. Be sure to crimp fully to
the complete closure of the tool.
L. When connecting or disconnecting the VCR
connectors, first, disconnect the AC plug from AC
supply socket.
1-1-3 TVVCRN_ISP
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and
wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified
values in order to verify compliance with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d') between
soldered terminals, and between terminals and Chassis or Secondary Conductor
surrounding metallic parts. (See Fig. 1)
Primary Circuit Terminals
Table 1: Ratings for selected area
Clearance d' d
AC Line Voltage Region
Distance (d), (d')
U.S.A. or 3.2 mm
110 to 130 V
Canada (0.126 inches)
Note: This table is unofficial and for reference only. Be
sure to confirm the precise values.
Fig. 1
2. Leakage Current Test
Confirm the specified (or lower) leakage current
between B (earth ground, power cord plug prongs) and
externally exposed accessible parts (RF terminals, Exposed Accessible Part
antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.) is
Z
lower than or equal to the specified value in the table
below.
Measuring Method: (Power ON) AC Voltmeter
(High Impedance)
Insert load Z between B (earth ground, power cord plug
prongs) and exposed accessible parts. Use an AC
voltmeter to measure across both terminals of load Z.
See Fig. 2 and following table.
Earth Ground
B
Power Cord Plug Prongs
Fig. 2
Table 2: Leakage current ratings for selected areas
AC Line Voltage Region Load Z Leakage Current (i) Earth Ground (B) to:
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