Emerson 6719df schematic
SERVICE MANUAL
Main Section
I Specifications
I Preparation for Servicing
I Adjustment Procedures
I Schematic Diagrams
I CBA’s
I Exploded Views
I Parts List
19″ COLOR TV/DVD/VCR
EWC19T5 6719DF
When servicing the deck
mechanism, refer to MK14 Deck
Mechanism Section.
Deck Mechanism Part No.:
N2446FT
IMPORTANT SAFETY NOTICE
Proper service and repair is important to the safe, reliable operation of all
Funai Equipment. The service procedures recommended by Funai and
described in this service manual are effective methods of performing
service operations. Some of these service special tools should be used
when and as recommended.
It is important to note that this service manual contains various CAUTIONS
and NOTICES which should be carefully read in order to minimize the risk
of personal injury to service personnel. The possibility exists that improper
service methods may damage the equipment. It also is important to
understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE.
Funai could not possibly know, evaluate and advice the service trade of all
conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Funai has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a
service procedure or tool which is not recommended by Funai must first
use all precautions thoroughly so that neither his safety nor the safe
operation of the equipment will be jeopardized by the service method
selected.
Manufactured under license from Dolby Laboratories.
“Dolby” and the double-D symbol are trademarks of Dolby Laboratories.
MAIN SECTION
19″ COLOR TV/DVD/VCR
EWC19T5/6719DF
Main Section
I Specifications
I Preparation for Servicing
I Adjustment Procedures
I Schematic Diagrams
I CBA’s
I Exploded Views
I Parts List
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1
Laser Beam Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1
Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4-1
Preparation for Servicing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5-1
Cabinet Disassembly Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6-1
Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1
How to Initialize the TV/DVD/VCR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1
Firmware Renewal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1
Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1
Wiring Diagram < TV/VCR Section > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13-1
Wiring Diagram < DVD Section > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13-2
System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14-1
IC Pin Function Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1
Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1
Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-17-1
Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18-1
Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19-1
SPECIFICATIONS
*ˆ Mode---------SP mode unless otherwise specified
* Test input terminal
<Except Tuner>--------Video input (1 Vp-p)
Audio input (-10 dB)
<Tuner>------------------Ant. input (80 dBµV) Video: 87.5%
Audio: 25 kHz dev. (1 kHz Sin)
< DEFLECTION >
Description Condition Unit Nominal Limit
1. Over Scan --- % 90 5
2. Linearity
3. High Voltage --- kV 25 ---
Horizontal % --- ±15
Vertical % --- ±10
< VIDEO & CHROMA >
Description Condition Unit Nominal Limit
Center m/m --- 0.4
1. Misconvergence
2. Tint Control Range --- deg ±30 ---
3. Contrast Control Range --- dB 6 2
4. Brightness (100% White Full Field) Contrast: Max ft-L 35 24
5. Color Temperature --- K 9200 ---
Corner m/m --- 2.5
Side m/m --- 1.5
< DVD >
Description Condition Unit Nominal Limit
1. Horizontal Resolution (TDV-540 TIT.2 CHP.16) --- Line 350 330
2. Video S/N at CN3400 (TDV-540 TIT.2 CHP.6) --- dB 60 55
3. S/N Chroma at CN3400
(TDV-540 TIT.2 CHP.17)
4. Audio Distortion (LPCM 48 kHz, W/LPF)
(PTD 1-NOR TIT.1 CHP.1)
5. Audio freq. response (LPCM 48 kHz)
(PTD 1-NOR TIT.1 CHP.5 -- 10)
6. Audio S/N (LPCM 48 kHz,W/LPF,A-WTD)
(PTD 1-NOR TIT.1 CHP.1 -- 2)
AM --- dB 58 53
PM --- dB 58 53
L
R
L, 20 Hz
R, 20 Hz
L, 20 kHz
R, 20 kHz
L
R
1-1-1 T0101SP
% 0.03 0.07
dB 0 +4/-5
dB 85 75
< VCR >
Description Condition Unit Nominal Limit
1. Horizontal Resolution (R/P, SP) Line 230 200
2. Jitter (Low) (R/P, SP) µs0.10.2
3. S/N Chroma
4. Wow & Flutter (JIS, UNWTD) (R/P, SP) % 0.25 0.5
AM(SP) (R/P, SP) dB 38 33
PM(SP) (R/P, SP) dB 38 33
< TUNER >
Description Condition Unit Nominal Limit
1. Video S/N (80 dBµV, T V4 ch ) -- - dB 45 40
2. Audio S/N (W/LPF) --- dB 45 40
< NORMAL AUDIO>
All items are measured across 8 Ω resistor at speaker output terminal.
Description Condition Unit Nominal Limit
1. Audio Output Power (R/P, SP) W 1.0 0.8
2. Audio S/N (W/LPF) (R/P, SP) dB 40 36
3. Audio distortion (W/LPF, -10 dB 1 kHz IN) (R/P, SP) % 3.0 5.0
4. Audio Freq. Response (-10dB 1kHz IN)
200 Hz (R/P, SP) dB -2.0 -2.0±5.0
8 kHz (R/P, SP) dB 0 0±6.0
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 absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet
limit specifications.
1-1-2 T0101SP
LASER BEAM SAFETY PRECAUTIONS
This DVD player uses a pickup that emits a laser beam.
Do not look directly at the laser beam coming
from the pickup or allow it to strike against your
skin.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep
your eyes at least 30 cm away from the pickup lens when the diode is turned on. Do not look directly at the laser
beam.
CAUTION: Use of controls and adjustments, or doing procedures other than those specified herein, may result in
hazardous radiation exposure.
Drive Mechanism
Assembly
Laser Beam Radiation
Laser Pickup
Turntable
LASER RADIATION
WHEN OPEN. DO NOT
CAUTION
STARE INTO BEAM.
Location: Top of DVD mechanism.
1-2-1 E6NLSP
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
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 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, 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. 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 ohmmeter lead in turn to each tuner
antenna input exposed terminal screw and, if
applicable, to the coaxial connector. If the
measured resistance is less than 1.0 megohm
or greater than 5.2 megohm, 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
instrument completely reassembled, plug the
AC line cord directly into a 120 V AC outlet. (Do
not use an isolation transformer during this
test.) Use a leakage current tester or a
metering system that complies 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
position 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.), especially any exposed metal
parts that offer an electrical return path to the
chassis. Any current measured must not
exceed 0.5 milli-ampere. Reverse the
instrument power cord plug in the outlet and
repeat the test.
READING SHOULD
NOT BE ABOVE 0.5 mA
LEAKAGE
DEVICE
BEING
TESTED
TEST ALL EXPOSED
METAL SURFACES
ALSO TEST WITH
PLUG REVERSED
USING AC
ADAPTER PLUG
AS REQUIRED
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 specially constructed to prohibit
X-radiation emissions. For continued Xradiation protection, the replacement picture
tube must be the same type as the original.
CURRENT
TESTER
+
EARTH
GROUND
_
1-3-1 TVDVDN_ISP
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 servicing is performed that involves B+,
horizontal deflection or high voltage. Correct
operation of the X-radiation protection circuits
also must be reconfirmed each time they are
serviced. (X-radiation protection circuits also
may be called “horizontal disable” or “hold
down.”) Read and apply the high voltage limits
and, if the chassis is so equipped, the Xradiation protection circuit specifications given
on instrument labels and in the Product Safety
& X-Radiation Warning note on the service
data chassis schematic. High voltage is
maintained within specified limits by close
tolerance safety-related components/
adjustments in the high-voltage circuit. If high
voltage exceeds specified limits, check each
component specified on the chassis schematic
and take corrective action.
2. Read and comply with all caution and safetyrelated notes on or inside the receiver cabinet, on
the receiver chassis, or on the picture tube.
3. Design Alteration Warning - Do not alter or add
to the mechanical or electrical design of this TV
receiver. Design alterations and additions,
including, but not limited to circuit modifications
and the addition of items such as auxiliary audio
and/or video output connections, might alter the
safety characteristics of this receiver and create a
hazard to the user. Any design alterations or
additions will void the manufacturer's warranty and
may make you, the servicer, responsible for
personal injury or property damage resulting
therefrom.
4. Picture Tube Implosion Protection Warning -
The picture tube in this receiver employs integral
implosion protection. For continued implosion
protection, replace the picture tube only with one
of the same type number. Do not remove, install,
or otherwise handle the picture tube in any
manner without first putting on shatterproof
goggles equipped with side shields. People not so
equipped must be kept safely away while picture
tubes are handled. Keep the picture tube away
from your body. Do not handle the picture tube by
its neck. Some “in-line” picture tubes are equipped
with a permanently attached deflection yoke;
because of potential hazard, do not try to remove
such “permanently attached” yokes from the
picture tube.
5. Hot Chassis Warning a. Some TV receiver chassis are electrically
connected directly to one conductor of the AC
power cord and maybe safety-serviced without
an isolation transformer only if the AC power
plug is inserted so that the chassis is
connected to the ground side of the AC power
source. To confirm that the AC power plug is
inserted correctly, with an AC voltmeter,
measure between the chassis and a known
earth ground. If a voltage reading in excess of
1.0V is obtained, remove and reinsert the AC
power plug in the opposite polarity and again
measure the voltage potential between the
chassis and a known earth ground.
b. Some TV receiver chassis normally have 85V
AC(RMS) between chassis and earth ground
regardless of the AC plug polarity. This chassis
can be safety-serviced only with an isolation
transformer inserted in the power line between
the receiver and the AC power source, for both
personnel and test equipment protection.
c. Some TV receiver chassis have a secondary
ground system in addition to the main chassis
ground. This secondary ground system is not
isolated from the AC power line. The two
ground systems are electrically separated by
insulation material that must not be defeated or
altered.
6. Observe original lead dress. Take extra care to
assure correct lead dress in the following areas: a.
near sharp edges, b. near thermally hot parts-be
sure that leads and components do not touch
thermally hot parts, c. the AC supply, d. high
voltage, and, e. antenna wiring. Always inspect in
all areas for pinched, out of place, or frayed wiring.
Check AC power cord for damage.
7. Components, parts, and/or wiring that appear to
have overheated or are otherwise damaged
should be replaced with components, parts, or
wiring that meet original specifications.
Additionally, determine the cause of overheating
and/or damage and, if necessary, take corrective
action to remove any potential safety hazard.
8. Product Safety Notice - Some electrical and
mechanical parts have special safety-related
characteristics which are often not evident from
visual inspection, nor can the protection they give
necessarily be obtained by replacing them with
components rated for higher voltage, wattage, etc..
Parts that have special safety characteristics are
identified by a # on schematics and in parts lists.
Use of a substitute replacement that does not
have the same safety characteristics as the
recommended replacement part might create
shock, fire, and/or other hazards. The product's
safety is under review continuously and new
instructions are issued whenever appropriate.
Prior to shipment from the factory, our products
are strictly inspected to confirm they comply with
the recognized product safety and electrical codes
1-3-2 TVDVDN_ISP
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.
Precautions during Servicing
A. Parts identified by the # symbol are critical for
safety.
Replace only with part number specified.
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations
applying to spurious radiation. These must also be
replaced only with specified replacements.
Examples: RF converters, RF cables, noise
blocking capacitors, and noise blocking filters, etc.
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. Be careful 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 DVD/VCR
connectors, first, disconnect the AC plug from the
AC supply socket.
1-3-3 TVDVDN_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
surrounding metallic parts. (See Fig. 1)
Table 1: Ratings for selected area
Chassis or Secondary Conductor
Primary Circuit Terminals
AC Line Voltage Region
110 to 130 V
Note: This table is unofficial and for reference only. Be
sure to confirm the precise values.
U.S.A. or
Canada
Clearance
Distance (d), (d’)
≥ 3.2 mm
(0.126 inches)
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,
antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.).
Measuring Method: (Power ON)
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.
dd'
Fig. 1
Exposed Accessible Part
Z
AC Voltmeter
(High Impedance)
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:
110 to 130 V
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
U.S.A. or
Canada
0.15 µF CAP. & 1.5 kΩ
RES. Connected in parallel
1-3-4 TVDVDN_ISP
i ≤ 0.5 mA rms
Exposed accessible
parts
STANDARD NOTES FOR SERVICING
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is
indicated as shown.
Top View
Out
2. For other ICs, pin 1 and every fifth pin are
indicated as shown.
Pin 1
3. The 1st pin of every male connector is indicated as
shown.
Input
In
Bottom View
5
10
Pb (Lead) Free Solder
Pb free mark will be found on PCBs which use Pb
free solder. (Refer to figure.) For PCBs with Pb free
mark, be sure to use Pb free solder. For PCBs
without Pb free mark, use standard solder.
Pb free mark
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
1. Prepare the hot-air flat pack-IC desoldering
machine, then apply hot air to the Flat Pack-IC
(about 5 to 6 seconds). (Fig. S-1-1)
Pin 1
Instructions for Connectors
1. When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnect
the AC cord.
2. FFC (Flexible Foil Connector) cable should be
inserted parallel into the connector, not at an
angle.
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
Fig. S-1-1
2. Remove the flat pack-IC with tweezers while
applying the hot air.
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
CAUTION:
1. The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering
machine, whose shape matches that of the Flat
Pack-IC.
2. Do not supply hot air to the chip parts around the
flat pack-IC for over 6 seconds because damage
to the chip parts may occur. Put masking tape
1-4-1 TVDVDN_SN
around the flat pack-IC to protect other parts from
damage. (Fig. S-1-2)
3. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when
removing it.
Hot-air
Flat Pack-IC
Desoldering
CBA
Machine
With Soldering Iron:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
Flat Pack-IC
Desoldering Braid
Soldering Iron
Fig. S-1-3
Masking
Tape
Tweezers
Flat Pack-IC
Fig. S-1-2
2. Lift each lead of the flat pack-IC upward one by
one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering
machine. (Fig. S-1-4)
Sharp
Pin
Fine Tip
Soldering Iron
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Fig. S-1-4
1-4-2 TVDVDN_SN
With Iron Wire:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2. Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
3. While heating the pins using a fine tip soldering
iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA
contact pads as shown in Fig. S-1-5.
4. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
5. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be
taken to ensure that the flat pack-IC is not
being held by glue. When the flat pack-IC is
removed from the CBA, handle it gently
because it may be damaged if force is applied.
Hot Air Blower
2. Installation
1. Using desoldering braid, remove the solder from
the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.
2. The “●” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1
on the PCB when positioning for installation. Then
presolder the four corners of the flat pack-IC. (See
Fig. S-1-8.)
3. Solder all pins of the flat pack-IC. Be sure that
none of the pins have solder bridges.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark.
Fig. S-1-7
To Solid
Mounting Point
CBA
Tweezers
Iron Wire
Soldering Iron
Fig. S-1-5
Fine Tip
Soldering Iron
Flat Pack-IC
or
Presolder
Flat Pack-IC
CBA
Fig. S-1-8
Fig. S-1-6
1-4-3 TVDVDN_SN
Instructions for Handling Semiconductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is
properly grounded to remove any static electricity that
may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate
with proper grounding (1 MΩ) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body grounding
band, be careful to avoid contacting semi-conductors
with your clothing.
<Incorrect>
<Correct>
1MΩ
CBA
Grounding Band
1MΩ
CBA
Conductive Sheet or
Copper Plate
1-4-4 TVDVDN_SN
PREPARATION FOR SERVICING
How to Enter the Service Mode
Caution 1:
1. Optical sensors system are used for Tape Start
and End Sensor on this equipment. Read this
page carefully and prepare as described on this
page before starting to service; otherwise, the unit
may operate unexpectedly.
Preparing 1:
1. Cover Q202 (START SENSOR) and Q201 (END
SENSOR) with Insulation Tape or enter the
service mode to activate Sensor Inhibition
automatically.
Note: Avoid playing, rewinding or fast forwarding the
tape to its beginning or end, because both
Tape End Sensors are not active.
How to Enter the Service Mode
1. Turn power on.
2. Use service remote control unit and press [DISC
MENU] button. (See page 1-7-1.)
3. When entering the service mode, one of the
number (1, 2 or 4) will display at corners of the
screen.
4. During the service mode, electrical adjustment
mode can be selected by remote control key.
(Service remote control unit).
Details are as follows.
Key Adjustment Mode
Picture adjustment mode: Press the
[PICTURE] button to change from BRT
(Bright), *CNT (Contrast), *COL (Color),
PICTURE
0
*TNT(Tint), *V-TNT(V-Tint) and *SHP
(Sharpness). Press [CH o/p] buttons
to display Initial Value.
*Marked items are not necessary to
adjust normally.
C-Trap adjustment: See adjustment
instructions page 1-7-2.
Y DL Time TV/Y DL Time EXT/Y SW
LPF/Black Stretch Off/ Black Stretch
CONT/C. Angle data values setting:
See adjustment instructions page 1-7-3.
Key Adjustment Mode
5
6 No need to use.
7
8
9
VOL o
VOL p
Caution 2:
1. The deck mechanism assembly is mounted on the
Main CBA directly, and SW1211 (REC-SAFETY
SW) is mounted on the Main CBA. When deck
mechanism assembly is removed from the Main
CBA due to servicing, this switch can not be
operated automatically.
Head switching position adjustment:
See adjustment instructions page 1-7-8.
Purity check mode: Shows Red, Green,
Blue or White cyclically on the screen
each time the [7] button is pressed.
H. Position adjustment: See adjustment
instructions page 1-7-7.
V. Shift/V.Size adjustment: See
adjustment instructions page 1-7-8.
CD-VOL/DVD-BRT/DVD-CNT/DVDSHARP data values setting: See
adjustment instructions page 1-7-4.
Cut-off adjustment: See adjustment
instructions page 1-7-5.
7F DATA/SLP REC/MONO data values
setting: See adjustment instructions
page 1-7-6.
White balance adjustment: See
adjustment instructions page 1-7-6.
Preparing 2:
1. To eject the tape, press the [STOP/EJECT] button
on the unit (or Remote Control).
2. When you want to record during the Service
mode, press the [Rec] button while depressing
SW1211 (REC-SAFETY SW) on the Main CBA.
Q201
(END SENSOR)
Q202
(START SENSOR)
1 No need to use.
H f
adjustment mode: See adjustment
2
3 No need to use.
4
0
instructions page 1-7-5.
Auto record mode: Perform recording
(15 Sec.) --> Stop --> Rewind (Zero
return) automatically.
SW1211
(REC-SAFETY SW)
1-5-1 T0101PFS
MAIN CBA
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps for the
cabinet parts, and the CBA in order to gain access to
item(s) to be serviced. When reassembling, follow the
steps in reverse order. Bend, route and dress the
cables as they were.
CAUTION!
When removing the CRT, be sure to discharge the
Anode Lead of the CRT with the CRT Ground Wire
before removing the Anode Cap.
[1] Rear Cabinet
[3] CRT[2] Tray Chassis Unit
[7] Function CBA
[4] DVD
Mechanism
[5] DVD Main
CBA Unit
[6] Sub CBA
[8] Deck Assembly
[9] Main CBA
2. Disassembly Method
Removal
Step/
Loc.
No.
[1]
Part
Rear
Cabinet
Remove/*Unhook/
Fig.
No.
Unlock/Release/
Unplug/Unclamp/
Note
Desolder
D1 4(S-1), (S-2), 2(S-3) ---
Removal
Step/
Loc.
No.
Part
Remove/*Unhook/
Fig.
No.
Unlock/Release/
Unplug/Unclamp/
Note
Desolder
3(S-9), Top Shield,
Deck
[8]
AssemblyD2D5
7(S-10), (S-11),
(S-12),
*CL1201, *CL1401,
4
*CL1402, *CL403
[9] Main CBA D2 5(S-13) ---
↓
(1)
↓
(2)
↓
(3)
↓
(4)
↓
(5)
Note:
(1) Order of steps in procedure. When reassembling,
follow the steps in reverse order. These numbers
are also used as the Identification (location) No. of
parts in figures.
(2) Parts to be removed or installed.
(3) Fig. No. showing procedure of part location
(4) Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or
desoldered.
P = Spring, L = Locking Tab, S = Screw,
CN = Connector
* = Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)
(5) Refer to the following “Reference Notes in the
Ta bl e ” .
Tr ay
[2]
Chassis
Unit
[3] CRT
DVD
[4]
Mechanism
DVD Main
[5]
CBA Unit
[6] Sub CBA
Function
[7]
CBA
Anode Cap, *CN2501,
D2
CRT CBA, *CN1601,
D3
*CN1802, *CN2571,
D5
*CN2801
D3
4(S-4) ---
D5
4(S-5), Wire Holder C,
D2
2(S-6), Loader Cover,
D4
*CN201, *CN301
D5
2, 3
D2
D4D5*CN1, *CN2 ---
6(S-7),
D2
Loader PCB Holder,
D5
*CN1301, *CN1602
D2
(S-8), *CN2401 ---
D5
---
1
1-6-1 T0101DC
Reference Notes in the Table
CAUTION!
When removing the CRT, be sure to discharge the
Anode Lead of the CRT with the CRT Ground Wire
before removing the Anode Cap.
1. CAUTION 1: Discharge the Anode Lead of the
CRT with the CRT Ground Wire before removing
the Anode Cap.
Disconnect the following: Anode Cap, CN2501,
CRT CBA, CN1601, CN1802, CN2571 and
CN2801. Then remove Tray Chassis Unit.
2. CAUTION 2: Electrostatic breakdown of the laser
diode in the optical system block may occur as a
potential difference caused by electrostatic charge
accumulated on cloth, human body etc., during
unpacking or repair work.
To avoid damage of pickup follow next procedures.
1) Disconnect Connector (CN301) on the DVD
Main CBA Unit.
2) Short the three short lands of FPC cable with
solder before removing the FFC cable (CN201)
from it. If you disconnect the FFC cable
(CN201), the laser diode of pickup will be
destroyed. (Fig. D4)
3) Remove four screws (S-5) and Wire Holder C,
and remove DVD Mechanism.
3. CAUTION 3: When reassembling, confirm the
FFC cable (CN201) is connected completely. Then
remove the solder from the three short lands of
FPC cable. (Fig. D4)
4. Remove three screws (S-9) and remove Top
Shield. Remove screws 7(S-10), (S-11) and (S-
12). Then, desolder connectors (CL1201, CL1401,
CL1402, CL403) and lift up the Deck Assembly.
(S-1)
(S-1)
(S-1)
(S-2)
(S-3)
(S-3)
(S-1)
[1] Rear Cabinet
Fig. D1
1-6-2 T0101DC
(S-5)
Wire Holder C
(S-6)
[2] Tray Chassis Unit
(S-8)
(S-5)
(S-7)
(S-7)
(S-7)
Loader Cover
[4] DVD
Mechanism
Loader
PCB Holder
[5] DVD Main
CBA Unit
(S-10)
(S-7)
(S-9)
(S-9)
Top Shield
(S-10)
[8] Deck Assembly
(S-10)
(S-13)
[6] Sub CBA
[7] Function CBA
(S-13)
(S-13)
(S-11)
1-6-3 T0101DC
[9] Main CBA
(S-12)
Fig. D2
Anode Cap
(S-4)
(S-4)
[3] CRT
CRT CBA
(S-4)
(S-4)
Fig. D3
DVD Mechanism
Short the three short lands by soldering.
(Either of two places.)
Connector
View for A
A
Fig. D4
1-6-4 T0101DC
DVD MAIN CBA UNIT
CN201
CN301
CN2A CN1A
ANODE
CRT
GND
CL2504A
CRT CBA
SCREEN
FOCUS
CN2501
CL2501B
TO SPEAKER
CN2801
FUNCTION CBA
CN2401
CN1803
SUB CBA
MAIN CBA
CL403
CL1401
CN2571
CN2503
CL1402
CL2501A
CN1
CN2
CN2502
CN1602CN1301
CN1302
CN1601
AC CORD
CN1802
TO SPEAKER
CL1201
FE HEAD
CYLINDER
ASSEMBLY
TUNER
ACE HEAD
ASSEMBLY
DECK ASSEMBLY
CAPSTAN
MOTOR
1-6-5 T0101DC
Fig. D5
ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: “CBA” is abbreviation for
“Circuit Board Assembly.”
Note: Electrical adjustments are required after
replacing circuit components and certain
mechanical parts. It is important to perform
these adjustments only after all repairs and
replacements have been completed.
Also, do not attempt these adjustments unless
the proper equipment is available.
Test Equipment Required
1. NTSC Pattern Generator (Color Bar W/White
Window, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)
2. AC Milli Voltmeter (RMS)
3. Alignment Tape (FL8A, FL8N), Blank Tape
4. DC Voltmeter
5. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50 V/Div,
F-Range: DC~AC-60 MHz
6. Frequency Counter
7. Plastic Tip Driver
8. Color Analyzer
How to Set up the Service mode:
Service mode:
1. Use the service remote control unit.
2. Turn the power on. (Use main power on the TV
unit.)
3. To enter the TV mode, press [CH o / p] buttons
on the TV unit.
4. Press [DISC MENU] button on the service remote
control unit. Version of micro computer will display
on the CRT. (Ex: 057-001)
X-Ray Protection Test
X-Ray protection test should be done when replacing
any parts of this chassis.
1. Short both ends of R2592 (on Sub CBA).
2. Confirm that the main power turns off.
3. If the main power does not turn off, then replace
the following parts (D2591, Q2591, R2592,
R2593, R2594 and IC1201).
4. Perform steps 1 to 3 again.
1. DC 114V (+B) Adjustment
How to make service remote control
unit:
1. Prepare normal remote control unit (Part No.
NE209UD). Remove 4 screws from the back lid
(Fig. 1-1).
Screws
Remote control unit (bottom)
2. Cut off pin 10 of the remote control
microprocessor and short circuit pins 10 and 17 of
the microprocessor with a jumper wire
Fig. 1-1
Purpose: To obtain correct operation.
Symptom of Misadjustment: The picture is dark and
unit does not operate correctly.
Test Point Adj. Point Mode Input
TP2501(+B)
J2550(GND)
Tape M. EQ. Spec.
--- DC Voltmeter +114±1.0 V DC
Note: TP2501(+B), J2550(GND) --- Sub CBA,
VR1601 --- Main CBA
1. Connect the unit to AC Power Outlet.
2. Connect DC Volt Meter to TP2501(+B) and
J2550(GND).
3. Adjust VR1601 so that the voltage of TP2501(+B)
becomes +114±1.0 V DC.
VR1601 --- ---
1-7-1 T0101EA
2. Setting for CONTRAST, COLOR,
3. C-Trap Adjustment
TINT, V-TINT and SHARP Data
Values
General
1. Enter the Service mode. (See page 1-7-1.)
2. Press [PICTURE] button on the service remote
control unit. Display changes “BRT,” “CNT,” “COL,”
“TNT,” “V-TNT,” and “SHP” cyclically when [PICTURE]
button is pressed.
CONTRAST (CNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “CONTRAST (CNT)”
display.
2. Press [CH o / p] buttons on the service remote
control unit so that the value of “CONTRAST
(CNT)” becomes 80.
COLOR (COL)
1. Press [PICTURE] button on the service remote
control unit. Then select “COLOR (COL)” display.
2. Press [CH o / p] buttons on the service remote
control unit so that the value of “COLOR (COL)”
becomes 58.
TINT (TNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “TINT (TNT)” display.
2. Press [CH o / p] buttons on the service remote
control unit so that the value of “TINT (TNT)”
becomes 56.
V-TINT (V-TNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “V-TINT (V-TNT)” display.
2. Press [CH o / p] buttons on the service remote
control unit so that the value of “V-TINT (V-TNT)”
becomes 56.
Purpose: To get minimum leakage of the color signal
carrier.
Symptom of Misadjustment: If C-Trap Adjustment is
incorrect, stripes will appear on the screen.
Test Point Adj. Point Mode Input
TP1301
(B-OUT)
Tape M. EQ. Spec.
---
minimum
Note: TP1301(B-OUT) --- Main CBA
1. Connect oscilloscope to TP1301.
2. Input a color bar signal from RF input.
Enter the Service mode. (See page 1-7-1.)
3. Press [0] button on the remote control unit and
select C-TRAP mode. (Fig. 3)
4. Press [CH o / p] buttons on the remote control
unit so that the carrier leakage B-Out (3.58 MHz)
value becomes minimum on the oscilloscope.
[CH o / p]
buttons
Oscilloscope
Pattern Generator
Figure
--- Color Bar
---
Fig. 2
SHARPNESS (SHP)
1. Press [PICTURE] button on the service remote
control unit. Then select “SHARPNESS (SHP)”
display.
2. Press [CH o / p] buttons on the service remote
control unit so that the value of “SHARPNESS
(SHP)” becomes 46.
Note: BRIGHT data value does not need to be
adjusted at this moment.
1-7-2 T0101EA
4. Setting for Y DL Time TV, Y DL
Time EXT, Y SW LPF, Black
Stretch Off, Black Stretch CONT
and C. Angle Data Values
1. Enter the Service mode. (See page 1-7-1.)
2. Y DL Time TV Adjustment: Press [0] button on
the service remote control unit twice to show “D-T
TV” on the display.
Y DL Time EXT Adjustment: Press [0] button on
the service remote control unit three times to show
“D-T EXT” on the display.
Y SW LPF Adjustment: Press [0] button on the
service remote control unit four times to show “Y
SW” on the display.
Black Stretch Off Adjustment: Press [0] button
on the service remote control unit five times to
show “B-S” on the display.
Black Stretch CONT Adjustment: Press [0]
button on the service remote control unit six times
to show “BS2” on the display.
C. Angle Adjustment: Press [0] button on the
service remote control unit seven times to show
“C-ANG” on the display.
3. Y DL Time TV Adjustment: Select “2” by
pressing [CH o / p] buttons on the service remote
control.
Y DL Time EXT Adjustment: Select “3” by
pressing [CH o / p] buttons on the service remote
control.
Y SW LPF Adjustment: Select “0” by pressing
[CH o / p] buttons on the service remote control.
Black Stretch Off Adjustment: Select “OFF” by
pressing [CH o / p] buttons on the service remote
control.
Black Stretch CONT Adjustment: Select “0” by
pressing [CH o / p] buttons on the service remote
control.
C. Angle Adjustment: Select “103” by pressing
[CH o / p] buttons on the service remote control.
C-TRAP Adjustment (Factory mode)
[0]
button
C-TRP 0 C-TRP 1
[0] button
[CH ]
button
[CH ]
button
Y DL Time TV Adjustment
[CH ]
D-T TV 0 D-T TV 1
[0] button
button
[CH ]
button
Y DL Time EXT Adjustment
[CH ]
D-T EXT 0 D-T EXT 1
[0] button
button
[CH ]
button
Y SW LPF Adjustment
[CH ]
Y SW
[0] button
button
0 Y SW
[CH ]
button
Black Stretch Off Adjustment
[CH ]
B-S OFF
[0] button
button
[CH ]
button
Black Stretch CONT Adjustment
[CH ]
BS2 0
button
1
B-S 0
BS2 1
[CH ]
button
[0] button
C. Angle Adjustment
[CH ]
C-ANG 103
button
[CH ]
button
C-ANG 95
Fig. 3
1-7-3 T0101EA
5. Setting for CD-VOL, DVD-BRT,
DVD-CNT and DVD-SHARP Data
Values
1. Enter the Service mode. (See page 1-7-1.)
2. CD-VOL Adjustment: Press [VOL o] button on
the service remote control unit once to show “CD
VOL” on the display.
DVD-BRT Adjustment: Press [VOL o] button on
the service remote control unit twice to show “DVD
BRT” on the display.
DVD-CNT Adjustment: Press [VOL o] button on
the service remote control unit twice to show “DVD
CNT” on the display.
DVD-SHARP Adjustment: Press [VOL o] button
on the service remote control unit three times to
show “DVD SHP” on the display.
3. CD-VOL Adjustment: Select “7” by pressing [CH
o / p] buttons on the service remote control.
DVD-BRT Adjustment: Select “14” by pressing
[CH o / p] buttons on the service remote control.
DVD-CNT Adjustment: Select “0” by pressing
[CH o / p] buttons on the service remote control.
DVD-SHARP Adjustment: Select “3” by pressing
[CH o / p] buttons on the service remote control.
[VOL ]
button
CD-VOL Adjustment (Factory mode)
[CH ]
CD VOL 0 CD VOL 1
[VOL ] button
button
[CH ]
button
DVD-BRT Adjustment
[CH ]
DVD BRT 0 DVD BRT 1
[VOL ] button
button
[CH ]
button
DVD-CNT Adjustment
[CH ]
DVD CNT 0 DVD CNT 1
[VOL ] button
button
[CH ]
button
DVD-SHARP Adjustment
[CH ]
DVD SHP 0 DVD SHP 1
button
[CH ]
button
[VOL ] button
DVD Key Transmission
DVD KEY
[VOL ] button
DVD Test
DVD TEST
Fig. 4
1-7-4 T0101EA
6. H f0 Adjustment
7. Cut-off Adjustment
Purpose: To get correct horizontal position and size of
screen image.
Symptom of Misadjustment: Horizontal position and
size of screen image may not be properly displayed.
Test Point Adj. Point Mode Input
R2583 [CH o / p] buttons Video ---
Tape M. EQ. Spec.
--- Frequency Counter 15.734 kHz±300 Hz
Note: R2583 --- Sub CBA
1. Connect frequency counter to R2583.
2. Operate the unit for at least 20 minutes.
3. Enter the Service mode. (See page 1-7-1.) Press
[2] button on the remote control unit and select HADJ mode.
4. Press [CH o / p] buttons on the remote control
unit so that the display will change “0” to “7.”
5. At this moment, choose display “0” to “7” when the
frequency counter display is closest to 15.734 kHz
± 300 Hz.
Purpose: To adjust the beam current of R, G, B, and
screen voltage.
Symptom of Misadjustment: White color may be
reddish, greenish or bluish.
Test Point Adj. Point Mode Input
Screen-Control
---
Tape M. EQ. Spec.
---
[CH o / p]
buttons
Pattern
Generator
Figure
Pattern Generator
RF Input
RF
See Reference
Notes below.
Black
Raster
Fig. 5
Notes: Screen Control --- FBT (Sub CBA),
FBT = Fly Back Transformer,
Use the Remote Control Unit.
1. Degauss the CRT and allow the unit to operate for
20 minutes before starting the alignment.
2. Input the Black raster signal from RF input.
3. Enter the Service mode. (See page 1-7-1.)
4. Press the [VOL p] button.
(Press [VOL p] button then display will change
CUT OFF/DRIVE and 7Fh adjustment).
5. Choose CUT OFF/DRIVE mode then press [1]
button. This adjustment mode is CUT OFF (R).
6. Increase the screen control so that the horizontal
line just appears on the CRT.
7. Press the [CH o / p] buttons until the horizontal
line becomes white.
8. Choose CUT OFF/DRIVE mode then press [2]
button. This adjustment mode is CUT OFF (G).
Press [CH o / p] buttons until the horizontal line
becomes white.
9. Choose CUT OFF/DRIVE mode then press [3]
button. This adjustment mode is CUT OFF (B).
Press [CH o / p] buttons until the horizontal line
becomes white.
1-7-5 T0101EA
8. Setting for 7F DATA/SLP REC/
9. White Balance Adjustment
MONO Data Values
1. Enter the Service mode. (See page 1-7-1.)
2. 7F Data Adjustment: Press [VOL p] button on
the service remote control unit once to show “7F”
on the display.
SLP REC Adjustment: Press [VOL p] button on
the service remote control unit twice to show “SLP
R” on the display.
MONO Adjustment: Press [VOL p] button on the
service remote control unit three times to show
“MONO” on the display.
3. 7F Data Adjustment: Select “FF” by pressing [CH
o / p] buttons on the service remote control.
SLP REC Adjustment: Select “+2” by pressing
[CH o / p] buttons on the service remote control.
MONO Adjustment: Select “ON” by pressing [CH
o / p] buttons on the service remote control.
7F DATA Adjustment (Factory mode)
[VOL ]
button
7F= FF 7F= 00
[VOL ] button
SLP REC Adjustment
SLP R= +2 SLP R= 0
[VOL ] button
MONO Adjustment
MONO= ON MONO= OFF
[CH ]
button
[CH ]
button
[CH ]
button
[CH ]
button
[CH ]
button
[CH ]
button
Fig. 6
Purpose: To mix red, green and blue beams correctly
for pure white.
Symptom of Misadjustment: White becomes bluish
or reddish.
Test Point Adj. Point Mode Input
Screen
[CH o / p]
buttons
RF
White Raster
(APL 100%)
Tape M. EQ. S p e c .
Pattern
---
Generator,
See below
Color analyzer
Figure
Color Analyzer
Fig. 7-1
Note: Use service remote control unit
1. Operate the unit more than 20 minutes.
2. Face the unit to the east. Degauss the CRT using
a degaussing coil.
3. Input the White Raster (APL 100%).
4. Set the color analyzer to the CHROMA mode and
after zero point calibration, bring the optical
receptor to the center on the tube surface (CRT).
5. Enter the Service mode. Press [VOL p] button on
the service remote control unit and select “C/D”
mode. (Display changes “C/D” and “7F” cyclically
when [VOL p] button is pressed.)
6. Press [4] button on the service remote control unit
for Red adjustment. Press [5] button on the service
remote control unit for Blue adjustment.
7. In each color mode, press [CH o / p] buttons to
adjust the values of color.
8. Adjust Red and Blue color so that the temperature
becomes 9200K (x: 286 / y: 294) ±3%.
9. At this time, re-check that horizontal line is white. If
not, re-adjust Cut-off Adjustment until the
horizontal line becomes pure white.
10. Turn off and on again to return to normal mode.
Receive APL 100% white signal and confirm that
Chroma temperatures become 9200K (x: 286 / y:
294) ±3%.
Note: Confirm that Cut Off Adj. is correct after this
adjustment, and attempt Cut Off Adj. if needed.
1-7-6 T0101EA
10. Sub-Brightness Adjustment
11. Focus Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Test Point Adj. Point Mode Input
---
Tape M. EQ. Spec.
---
White
[CH o / p]
buttons
Pattern
Generator
Figure
---
SMPTE
7.5IRE
See below
Black
This bar
just
visible
Fig. 7-2
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Test Point Adj. Point Mode Input
--- Focus Control --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator See below
Note: Focus VR --- FBT (Sub CBA),
FBT = Fly Back Transformer
1. Operate the unit more than 30 minutes.
2. Face the unit to the East and degauss the CRT
using a degaussing coil.
3. Input the monoscope pattern.
4. Adjust the Focus Control on the FBT to obtain a
clear picture.
12. H. Position Adjustment
Purpose: To obtain correct horizontal position of
screen image.
Note: SMPTE Setup level --- 7.5 IRE
1. Enter the Service mode. (See page 1-7-1.)
Then input SMPTE signal from RF input.
2. Press [PICTURE] button. (Press [PICTURE]
button then display will change BRT, CNT, COL,
TNT, V-TNT, and SHP). Select BRT and press [CH
o / p] buttons so that the bar is just visible (See
above figure).
Symptom of Misadjustment: H. position may not be
properly displayed.
Test Point Adj. Point Mode Input
---
Tape M. EQ. Spec.
--- Pattern Generator ---
1. Enter the Service mode. (See page 1-7-1.)
Press [8] button on the remote control unit and
select H-P mode.
2. Input monoscope pattern.
3. Press [CH o / p] buttons on the remote control
unit so that the left and right side of the
monoscope pattern are equal to each other.
[CH o / p]
buttons
--- Monoscope
1-7-7 T0101EA
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