FUNAI TVCR-1404 User manual

SERVICE MANUAL
Sec. 1: Main Section
ISpecifications
IPreparation for Servicing
IAdjustment Procedures
ISchematic Diagrams
ICBA’s
IExploded views
IParts List
Sec. 2: Deck Mechanism Section
IStandard Maintenance
IAlignment for Mechanism
IDisassembly/Assembly of Mechanism
IAlignment Procedures of Mechanism
IDeck Exploded Views
IDeck Parts List
14" COLOR TV/VCR COMBINATION
TVCR-1404
PAL
SECAMPAL
This service manual is for TVCR-1404
series. When servicing these models,
please confirm a model number on the
rating label located on the backside of
the cabinet.
Refer to the rating label illustration at
right (example: TVCR-A1404). rating label
model number

MAIN SECTION
14" COLOR TV/VCR COMBINATION
TVCR-A1404/TVCR-B1404/
TVCR-C1404/TVCR-D1404/
TVCR-A1404T/TVCR-A1404TG
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1
Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1
Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1
Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1
Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1
Mechanical Trouble Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-7
Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1
System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1
IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1
Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1
Cabinet Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1
Packing Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-3
Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1
Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1
Sec. 1: Main Section
ISpecifications
IPreparation for Servicing
IAdjustment Procedures
ISchematic Diagrams
ICBA’s
IExploded Views
IParts List

1-1-1 T6600SP
SPECIFICATIONS
*ˆMode---------SP mode unless otherwise specified
*Test input terminal
<Except Tuner>-------------Video input (1Vp-p)
Audio input (-10dB)
<Tuner>-----------------------Ant. input (80dBµV) Video: 87.5% mod.(BG/DK), 80.0% mod.(I)
Audio: 30kHz div (1kHz Sin)
<DEFLECTION>
<VIDEO & CHROMA>
<VCR>
<TUNER>
Description Condition Unit Nominal Limit
1. Over Scan — % 90 85/95
2. Linearity Horizontal % — ±15
Ver tic al % — ±1 0
3. High Voltage — kV 22 —
Description Condition Unit Nominal Limit
1. Misconvergence Center m/m — 0.6
Corner m/m — 2.0
Side m/m — 1.5
2. Contrast Control Range — dB — 6
3. Brightness APL 100% ft-L 55 40
4. Color Temperature — K 8500 —
Description Condition Unit Nominal Limit
1. Horizontal Resolution (R/P) Line 230 200
2. Jitter (Low) (R/P) µS 0.05 0.2
3. S/N Chroma AM(SP) (R/P) dB 38 33
PM(SP) (R/P) dB 36 33
4. Wow & Flutter (RMS) (R/P) % 0.25 0.5
Description Condition Unit Nominal Limit
1. Video S/N — dB 45 40
2. Audio S/N (W/LPF) — dB 43 40

1-1-2 T6600SP
<AUDIO>
All items are measured across 8Ωresistor at speaker output terminal.
Note: Nominal specifications represent the design specifications. All units should be able to approximate these.
Some will exceed and some may drop slightly below these specifications. Limit specifications represent the abso-
lute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifica-
tions.
<TV NORM, TUNER SENSIVITY, RECEPTIVE TV CHANNELS>
Description Condition Unit Nominal Limit
1. Audio Output Power (Max.) (R/P) W 1.0 0.8
2. Audio S/N (W/LPF) (R/P) dB 40 36
3. Audio Distortion (W/LPF) (R/P) % 3.0 5.0
4. Audio Freq. Response
(-20dB Ref. 1kHz)
200Hz (R/P)
6kHz (R/P)
dB
dB
—
—
5.0/-10
5.0/-10
Model TV Norm Tuner Sensivity Receptive TV Channels
TVCR-A1404
TVCR-A1404T
TVCR-A1404TG
PA L - B /G NOM: VHF 46dBµV / UHF 47dBµV
MAX: VHF 53dBµV / UHF 56dBµV
E2 - E12, IA - IH, E21 - E69,
S01 - S03, Z+1, Z+2,
S1 - S41, gap2
TVCR-B1404 PAL-I NOM: VHF 46dBµV / UHF 47dBµV
MAX: VHF 53dBµV / UHF 56dBµV
IRA - IRJ, gapC, E21 - E69,
S01 - S03, Z+1, Z+2,
S1 - S41
TVCR-C1404
SECAM-L/L’ NOM: VHF 47dBµV / UHF 47dBµV
MAX: VHF 54dBµV / UHF 57dBµV
F1 - F10, E21 - E69,
FB - FQ, S4 - S41
PA L - B /G NOM: VHF 46dBµV / UHF 47dBµV
MAX: VHF 53dBµV / UHF 56dBµV
E2 - E12, IA - IH, E21 - E69,
S01 - S03, Z+1, Z+2,
S1 - S41, gap2
TVCR-D1404 PAL/SECAM-BG/DK
PA L
NOM: VHF 46dBµV / UHF 47dBµV
MAX: VHF 53dBµV / UHF 56dBµV
SECAM
NOM: VHF 47dBµV / UHF 47dBµV
MAX: VHF 54dBµV / UHF 57dBµV
E2 - E12, E21 - E69,
S01 - S03, Z+1, Z+2,
S1 - S41, gap2, R1 - R12

1-2-1 T6600SFTY
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
1. Before returning an instrument to the custom-
er, always make a safety check of the entire instru-
ment, including, but not limited to, the following
items:
a. Be sure that no built-in protective devices are de-
fective and 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, in-
cluding any removed for servicing convenience.
(2) When reinstalling the chassis and/or other as-
sembly 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 oper-
ate this instrument or permit it to be operated
without all protective devices correctly in-
stalled 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) spac-
ing 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. Antenna Cold Check - With the instrument AC
plug removed from any AC source, connect an
electrical jumper across the two AC plug prongs.
Place the instrument AC switch in the on position.
Connect one lead of an ohmmeter to the AC plug
prongs tied together and touch the other ohmme-
ter lead in turn to each tuner antenna input ex-
posed terminal screw and, if applicable, to the
coaxial connector. If the measured resistance is
less than 1.0 megohm or greater than 5.2 mego-
hm, an abnormality exists that must be corrected
before the instrument is returned to the customer.
Repeat this test with the instrument AC switch in
the off position.
d. Leakage Current Hot Check - With the instru-
ment completely reassembled, plug the AC line
cord directly into a 120V AC outlet. (Do not use an
isolation transformer during this test.) Use a leak-
age current tester or a metering system that com-
plies with American National Standards Institute
(ANSI) C101.1 Leakage Current for Appliances
and Underwriters Laboratories (UL) 1410, (50.7).
With the instrument AC switch first in the on posi-
tion and then in the off position, measure from a
known earth ground (metal water pipe, conduit,
etc.) to all exposed metal parts of the instrument
(antennas, handle brackets, metal cabinet, screw
heads, metallic overlays, control shafts, etc.), es-
pecially any exposed metal parts that offer an elec-
trical return path to the chassis. Any current
measured must not exceed 0.5 milli-ampere. Re-
verse the instrument power cord plug in the outlet
and repeat the test.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
SPECIFIED HEREIN INDICATE A POTENTIAL
SHOCK HAZARD THAT MUST BE ELIMINATED
BEFORE RETURNING THE INSTRUMENT TO
THE CUSTOMER OR BEFORE CONNECTING
THE ANTENNA OR ACCESSORIES.
e. X-Radiation and High Voltage Limits - Because
the picture tube is the primary potential source of
X-radiation in solid-state TV receivers, it is special-
ly constructed to prohibit X-radiation emissions.
For continued X-radiation protection, the replace-
ment picture tube must be the same type as the
original. Also, because the picture tube shields
and mounting hardware perform an X-radiation
protection function, they must be correctly in place.
High voltage must be measured each time servic-
DEVICE
LEAKAGE
CURRENT
TESTER
ALSO TEST WITH
PLUG REVERSED
USING AC
ADAPTER PLUG
AS REQUIRED
TEST ALL EXPOSED
METAL SURFACES
READING SHOULD
NOT BE ABOVE 0.5 mA
EARTH
GROUND
BEING
TESTED