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-
always make a safety check of the entire instru-
er,
ment, including, but not limited to, the following
items:
Be sure that no built-in protective devices are de-
a.
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, 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.
ate 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.
Be sure that there are no cabinet openings through
b.
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 -
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-
Do not oper-
With the instru-
age 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
CURRENT
TESTER
EARTH
GROUND
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 -
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 X-radiation protection, the replacement 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-
Because
1-1-1T6300SFTY
ing 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 X-radiation 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.
Read and comply with all caution and safety-relat-
2.
ed notes on or inside the receiver cabinet, on the
receiver chassis, or on the picture tube.
3. Design Alteration Warning -
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 -
Some TV receiver chassis are electrically connect-
a.
ed 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
Do not alter or add
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.
Some TV receiver chassis normally have 85V
b.
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.
Some TV receiver chassis have a secondary
c.
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.
Observe original lead dress. Take extra care to as-
6.
sure 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.
Components, parts, and/or wiring that appear to
7.
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 -
chanical 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 with the 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.
Some electrical and me-
1-1-2T6300SFTY
Precautions during Servicing
Parts identified by the ( ! ) symbol are critical for
A.
safety.
Replace only with part number specified.
In addition to safety, other parts and assemblies
B.
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.
Use specified internal wiring. Note especially:
C.
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
Use specified insulating materials for hazardous
D.
live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers
4) Insulators for transistors.
When replacing AC primary side components
E.
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before soldering.
Observe that the wires do not contact heat produc-
F.
ing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.)
Check that replaced wires do not contact sharp
G.
edged or pointed parts.
When a power cord has been replaced, check that
H.
5~6 kg of force in any direction will not loosen it.
Also check areas surrounding repaired locations.
I.
Use care that foreign objects (screws, solder drop-
J.
lets, etc.) do not remain inside the set.
Crimp type wire connector
K.
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.
When connecting or disconnecting the VCR con-
L.
nectors, first, disconnect the AC plug from AC supply socket.
1-1-3T6300SFTY
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)
T
Table 1 : Ratings for selected area
AC Line VoltageClearance Distance (d) (d’)
3mm(d)
220 to 240 V
This table is unofficial and for reference only.
Note:
Be sure to confirm the precise values.
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.).
≥
6 mm(d’)
≥
Chassis or Secondary Conductor
Primary Circuit Terminals
dd’
Exposed Accessible Part
Z
AC Voltmeter
(High Impedance)
Fig. 1
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.
T
Table 2: Leakage current ratings for selected areas
AC Line VoltageLoad ZLeakage Current (i)
2kΩ RES.
Connected in
220 to 240 V
This table is unofficial and for reference only. Be sure to confirm the precise values.
Note:
parallel
50kΩ RES.
Connected in
parallel
i≤0.7mA AC Peak
i≤2mA DC
i≤0.7mA AC Peak
i≤2mA DC
One side of
B
Power Cord Plug Prongs
One side of power cord plug
Fig. 2
prongs (B) to:
RF or
Antenna terminals
A/V Input, Output
1-1-4T6300SFTY
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 5th pin is indicated
as shown:
Pin 1
3. The 1st pin of every pin connector are indicated as
shown:
Pin 1
Input
In
Bottom View
5
10
How to Read the Values of the Rectangular Type Chip Components
Example:
(a) Resistor
473
= 473 = 47 [kΩ]
(b) Capacitor
= Not Shown
Caution:
Once chip parts (Resistors, Capacitors, Transistors,
etc.) are removed, they must not be reused. Always
use a new part.
Replacement Procedures for
(Top View)
(Top View)
Instructions for Connectors
1. When you connect or disconnect FFC cable (connector), be sure to disconnect the AC cord.
2. FFC cable (connector) should be inserted parallel
into the connector, not at an angle.
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
[ CBA= Circuit Board Assembly ]
Leadless (Chip) Components
The Following Procedures are Recommended for the Replacement of the
Leadless Components Used in this Unit.
1. Preparation for replacement
a. Soldering Iron
Use a pencil-type soldering iron (less than 30
watts).
b. Solder
Eutectic solder (Tin 63%, Lead 37%) is recommended.
c. Soldering time
Do not apply heat for more than 4 seconds.
d. Preheating
Leadless capacitor must be preheated before
installation. (130°C~150°C, for about two minutes.)
Notes:
a. Leadless components must not be reused after
removal.
b. Excessive mechanical stress and rubbing for the
component electrode must be avoided.
2. Removing the leadless component
Grasp the leadless component body with tweezers
and alternately apply heat to both electrodes. When
the solder on both electrodes has melted, remove
leadless component with a twisting motion.
1-2-1SFTY_5
Notes:
a. Do not attempt to lift the component off the board
until the component is completely disconnected
from the board by the twisting action.
b. Take care not to break the copper foil on the
printed board
3. Installing the leadless component
a. Presolder the contact points of the circuit board.
b. Press the part downward with tweezers and solder
both electrodes as shown below.
Note:
Do not glue the replacement leadless component to
the circuit board.
Tweezers
Chip
Soldering Iron
Tweezers
Soldering Iron
Solder
Soldering Iron
2. 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 solder lands under the IC when removing it.
1. Removal
With Hot - Air Flat Pack - IC Desoldering Machine:
a. Prepare the Hot - Air Flat Pack - IC Desoldering
Machine, then apply hot air to Flat Pack - IC (about
5~6 seconds). (Fig. S-1-1)
b. Remove the Flat Pack- IC with tweezers while
applying the hot air.
With Soldering Iron:
a. 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)
b. 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)
With Iron Wire:
a. 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)
b. Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
c. Pull up on the wire as the solder melts so as to lift
the IC leads from the CBA contact pads, while
heating the pins using a fine tip soldering iron or
hot air blower.
Note:
When using a soldering iron, care must be taken
to ensure that the Flat Pack - IC is not being held
by glue, or when it is removed from the CBA, it
may be damaged if force is used.
Presolder
How to Remove / Install Flat Pack IC
Caution:
1. Do not apply the hot air to the chip parts around the
Flat Pack-IC for over 6 seconds as damage may
occur to the chip parts. Put Masking Tape around
the Flat Pack-IC to protect other parts from damage. (Fig. S-1-2)
2. Installation
a. 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.
b. The "I" mark on the Flat Pack - IC indicates pin 1
(See Fig. S-1-6). Make sure this mark matches the
1 on the CBA when positioning for installation.
Then pre - solder the four corners of the Flat PackIC (See Fig. S-1-7).
c. Solder all pins of the Flat Pack - IC. Make sure that
none of the pins have solder bridges.
1-2-2SFTY_5
CBA
r
C
Fig. S-1-1
Hot-air
Flat Pack-IC
Desoldering
Machine
Hot Air Blower
o
Iron Wire
Soldering Iron
o Solid Mounting Point
Fig. S-1-5
Example :
Masking
Tape
Tweezers
Flat Pack-IC
Fig. S-1-2
Fig. S-1-3
Flat Pack-IC
Desoldering Braid
Soldering Iron
Pin 1 of the Flat Pack-IC
is indicated by a " " mark.
Fig. S-1-6
Presolder
oldering Iron
Flat Pack-I
CBA
Fine Tip
Soldering Iron
Fig. S-1-7
Sharp
Pin
Fig. S-1-4
1-2-3SFTY_5
Instructions for Handling
Semiconductors
Electrostatic breakdown of the semiconductors may
occur due to a potential difference caused by electrostatic charge during unpacking or repair work.
Ground for Human Body
Be sure to wear a grounding band (1MΩ) that is properly grounded to remove any static electricity that may
be charged on the body.
Ground for Work Bench
Be sure to place a conductive sheet or copper plate
with proper grounding (1MΩ) on the work bench or
other surface, where the semiconductors are to be
placed. Because the static electricity charge on the
clothing will not escape through the body grounding
band, be careful to avoid contacting semiconductors to
clothing.
Incorrect
Correct
1MΩ
CBA
Grounding Ban
1MΩ
CBA
Conductive Sheet or
Copper Plate
1-2-4SFTY_5
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.
Avoid playing, rewinding or fast forwarding the
Note:
tape to its beginning or end, because both Tape End
Sensors are not active.
How to Enter the Service Mode
1. Turn the power on. (Use main power on the TV
unit.)
2. Press [STANDBY/ON], [2], [7], [1], and [MUTE]
buttons on the remote control unit in that order
within 5 seconds. When entering the service mode,
“F” will display at corners of the screen.
3. During the service mode, electrical adjustment
mode can be selected by remote control key.
Details are as follows.
KeyAdjustment Mode
Picture adjustment mode: Press the
MENU button to change from BRT
(Bright), *CNT (Contrast), *COL
MENU
p
0
1
2
3
4
(Color), *TNT(Tint) and SHP. Press
P+/P- key to display Initial Value.
*Marked items are not necessary to
adjust normally.
SECAM Black Level adjustment mode:
See adjustment instructions page
1-6-3.
Cut-Off adjustment mode: See adjustment instructions page 1-6-4.
White Balance adjustment mode: See
adjustment instructions page 1-6-5.
C-Trap adjustment mode: See adjustment instructions page 1-6-2.
DSPC adjustment mode: See adjustment instructions page 1-6-3.
H adjustment mode: See adjustment
instructions page 1-6-2.
No need to use.
Auto record mode: Perform recording
(15 Sec.)-->Stop-->Rewind (Zero
return) automatically.
KeyAdjustment Mode
Head switching point adjustment
5
6
7
8
9
Caution: 2
1. The deck mechanism assembly is mounted on the
Main CBA directly, and SW211 (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.
mode: See adjustment instructions
page 1-6-6.
No need to use.
Purity check mode: Shows Red,
Green, Blue or White cyclically on the
screen each time the [7] key is
pressed.
H. Shift adjustment mode: See adjustment instructions page 1-6-4.
V.size/V. shift adjustment: See adjustment instructions page 1-6-4.
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 SW211
(REC-SAFETY SW) on the Main CBA.
Q201
(END SENSOR)
SW211
(REC-SAFETY SW)
Q202
(START SENSOR)
MAIN CBA
1-3-1T6300PFS
OPERATING CONTROLS AND FUNCTIONS
The remote control
EJECT
MENUSTATUS/EXITCLEAR
STANDBY/ON
123
456
78
SLEEP
RECORD/OTR
SYSTEM
0
STILL
P+
MUTE
P-
SMART PICTURE
SV/V+
TEXT
?
o
l
p
9
INDEX
p
l
o
EJECT
CLEAR
RECORD/OTR
To eject the cassette.
To delete last entry/Clear programmed recording (TIMER).
To record the TV channel selected at this moment or
press repeatedly to start a One-Touch Recording.
STILL
To stop the tape and show a still picture.
P-P+
To select the programme number. During normal or slow motion
playback, press to adjust the tracking or vertical jitter.
MUTE
To eliminate the sound. Press again to restore the volume.
To adjust the volume.
SYSTEM
SLEEP
TEXT
Doesn’t work in these models.
To select the switch-off time in 30 minutes intervals.
To switch TELETEXT on or off,or transparent mode.
o
l
p
: enlarge font
: switch TELETEXT decoder off temporarily
: select TELETEXT sub-page
: recall hidden information
p
l
o
: stop page changes
: go back to start page.
SV/V+
or to alter / clear programmed TIMER recordings. Select TELETEXT function
when you are in TELETEXT mode.
SMART PICTURE
TELETEXT function when you are in TELETEXT mode.
Yellow button/ Select TELETEXT function when you are in TELETEXT mode.
INDEX
tape in combination with / . Select TELETEXT function when
you are in TELETEXT mode.
STANDBY/ON
MENU
STATUS/EXIT
To exit on-screen menus.
0..9
hight speed. During playback, press to fast forward the tape while the picture
stay on the screen. To store or confirm entry in the menu. Press to adjust the
controls of TVCR menu.
speed. During playback, press to rewind the tape while the picture stay on the
screen.To return the cursor in the menu. Press to adjust the controls of TVCR
menu.
Red button / To programme recordings with VIDEO Plus+ system
Green button / To call up preset picture settings.Select
Blue button / Search for the previous/next recording code on the
To switch TVCR On or Off or to interrupt menu function.
To call up main menu of TVCR.
To access or remove the TVCR’s on-screen status display.
Press to select channels.
When tape playback is stopped, press to fast forward the tape at
When tape playback is stoped, press to rewind the tape at high
To play a tape, select an item in the menu of TVCR.
To stop the tape, select an item in the menu of TVCR.
1-4-1T6300IB
Front of the device
STANDBY
Power switch: To switch the TV-Video Combi off.
Caution: If you switch off using the power switch, TIMER-recordings are impossible!
Standby/on: To switch TVCR On or Off or to interrupt a menu function.
Volume: In connection with the button, to adjust the volume.
Programme number minus: previous programme number
P-
Programme number plus: next programme number
P+
Record: To record the programme currently selected.
Playback: To play a recorded cassette.
/
Pause/Stop, eject cassette: To stop the tape; If this key is depressed while in STOP, the cassette is then
ejected from the machine.
When tape playback is stopped, press to fast forward the tape at high speed.
When tape playback is stoped, press to rewind the tape at high speed.
–+
Sockets on the front:
White socket / input socket: To connect a camcorder or video games (audio).
Yellow socket / input socket: To connect a camcorder or video games (video).
Small socket / socket for headphones: To connect headphones.
AUDIO
VIDEO
Back of the set
EXT1/AV1
Aerial input socket: To connect the aerial cable.
EXT1/AV1
Scart socket :To connect a satellite receiver, decoder, video recorder, etc.
The control lights at the front of machine
STANDBYStandby LED: lights up when the TV-Video Combi has been switched On by means of the main
switch.
RECORD
Fast blink: RECORDING PAUSE;
Slow blink: TIMER RECORDING is stored in a timer block.
Recording LED:
lights up during recording.
TIMER RECORDING NOT STAND-BY.
1-4-2T6300IB
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): Order of steps in Procedure. When reassembling,
(2): Parts to be removed or installed.
(3): Fig. No. showing Procedure of Part Location.
(4): Identification of part to be removed, unhooked,
(5): Refer to the following "Reference Notes in the
PART
H.V./Power
Supply
CBA
↓
(2)
follow the steps in reverse order.These numbers
are also used as the identification (location) No. of
parts in Figures.
unlocked, released, unplugged, unclamped, or
desoldered.
S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or
Desolder
2(S-2) = two Screw (S-2)
Table."
REMOVE/
*UNHOOK/
Fig.
UNLOCK/RELEASE/
No.
UNPLUG/DESOLDER
4, 6 4(S-8)8
↓
(3)
↓
(4)
Note
(5)
↓
Reference Notes in the Table
1. Removal of the Rear Cabinet.
Remove four screws (S-1) and two screws (S-2).
Then, disconnect connector CN801.
2. Removal of the Tray Chassis Unit.
Disconnect connectors CN701, CN702, CN503,
CN504, CN601 and CN602. Then pull the Tray
Chassis Unit out.
3. Removal of the Top Shield.
Remove five screws (S-3).
4. Removal of the Deck Unit.
Remove seven screws (S-4) and two screws (S-5).
Then, desolder connectors (CN201, CL401,
CL402, CL403) and lift up the Deck Unit.
5. Removal of the Text CBA.
Disconnect connectors CN751 and CN752. Then,
lift the Text CBA up.
1-5-1T6300DC
6. Removal of the Main CBA.
Screws S1 can be cross
slot or torx 10. In case of
torx please use screw
driver: 4822 395 50423.
Remove six screws (S-6) and pull up the Main
CBA.
Caution !!
Discharge the Anode Lead of the CRT with the CRT
Ground Wire before removing the Anode Cap.
7. Removal of the Power Unit.
First, discharge the Anode Lead of the CRT with
the CRT Ground before removing the Anode Cap.
Disconnect the following: Anode Cap, CN501, CRT
S-2
CBA and CN571. Second, remove two screws (S-
7). Then, pull the Power Unit backward.
8. Removal of the H.V./Power Supply CBA.
Remove four screws (S-8) and pull up the H.V./
Power Supply CBA.
9. Removal of the CRT.
Remove four screws (S-9) and pull the CRT backward.
S-1
S-2
EXT1/AV1
S-1
S-1
S-1
S-2
Fig. 1
S-1
S-2
S-1
[1] REAR CABINET
Fig. 2
1-5-2T6300DC
S-3
S-3
S-3
S-4
S-4
[6] MAIN CBA
S-6
S-6
S-3
S-4
[2] TRAY CHASSIS
S-3
[3] Top Shield
S-4
[4] DECK UNIT
[5] TEXT CBA
S-6
S-6
S-6
S-5
S-5
Fig. 3
1-5-3T6300DC
(S-8)
(S-8)
[8] H.V./Power Supply CBA
(S-7)
[7] Power Unit
(S-8)
(S-8)
S-9
(S-8)
(S-7)
ANODE CAP.
Fig. 4
CRT CBA
S-9
[9] CRT
S-9
S-9
Fig. 5
1-5-4T6300DC
ANODE
CRT
CRT CBA
CN501B
CN504
CL505A
SCREEN
FOCUS
GND
MAIN CBA
H.V./POWER SUPPLY CBA
CN601
TO DEGAUSS
COIL
TO SPEAKER
CN801
CN602
CL403
CL501A
CL506A
CN571
CN501
CN503
CN701
FE HEAD
CYLINDER
ASSEMBLY
CL401
CL402
CN201
AC HEAD
ASSEMBLY
CN702
CN751
CL603A
CAPSTAN
MOTOR
CL301A
CL302A
DECK UNIT
CN752
TEXT CBA
CN901
CN902
Fig. 6
1-5-5T6300DC
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. PAL Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale,
Monoscope, Multi-Burst)
2. AC Milli Voltmeter (RMS)
3. Alignment Tape (FL6A), Blank Tape
4. DC Voltmeter
5. Oscilloscope: Dual-trace with 10:1 probe,
V-Range: 0.001~50V/Div,
F-Range: DC~AC-60MHz
6. Frequency Counter
7. Plastic Tip Driver
How to set up the option code
1. Enter the Service mode.
2. Press the [STATUS/EXIT] button on the remote
control unit. The option code appears on the display.
3. If needed, input the option code as shown below
using number buttons on the remote control unit.
ModelOption Code
14PV360(365)/01133566
14PV360(365)/07133564
14PV360(365)/39133565
14PV365/58133567
4. To reset the software, press [PAUSE] and [5] buttons on the remote control unit.
The option code is changed.
1. DC 105V (+B) Adjustment
Purpose:
Symptom of Misadjustment:
unit does not operate correctly.
Test pointAdj. PointModeInput
To obtain correct operation.
TP503
(+B)
TP504
(GND)
VR601---
The picture is dark and
Color
Bar
How to Set up the Service mode:
NOTE:
Service Mode:
1. Turn the power on. (Use main power on the TV
2. Press [STANDBY/ON], [2], [7], [1], and [MUTE] but-
-To cancel the service mode, press [STANDBY/ON]
After replacing the IC202 ( Memory ) or Main CBA,
the set value in IC202 ( Memory ) will be lost. So it
is necessary to set up or adjust in the Service
mode after its replacement.
unit.)
tons on the remote control unit in that order within 5
seconds.
button on the remote control.
TapeM. EQ.Spec.
---
TP503(+B), TP504(GND), VR601 --- H.V./Power
Note:
Supply CBA
1. Connect the unit to AC Power Outlet.
2. Input a color bar signal from RF input and leave it
for at least 20 minutes.
Enter the Service mode. (See page 1-6-1.)
3. Connect DC Volt Meter to TP503(+B) and
TP504(GND).
4. Adjust VR601 so that the voltage of TP503(+B)
becomes +105±0.5V DC.
DC Voltmeter
Plastic Tip Driver
+105±0.5V DC
1-6-1Z11PALEA
2. H Adjustment
3. C-Trap Adjustment
Purpose:
of screen image.
Symptom of Misadjustment:
size of screen image may not be properly displayed.
Test pointAdj. PointModeInput
R583
TapeM. EQ.Spec.
Note:
1. Connect Frequency Counter to R583.
2. Set the unit to the VIDEO mode and no input is
necessary. Enter the Service mode.
(See page 1-6-1.)
3. Operate the unit for at least 20 minutes.
4. Press [2] button on the remote control unit and
select H-Adj Mode.
5. Press [P+/P-] buttons on the remote control unit so
that the display will change [0] to [7.]
At this moment, choose display [0] to [7] when the
Frequency counter display is closest to
15.625kHz±300Hz.
6. Turn the power off and on again.
To get correct horizontal position and size
Horizontal position and
P+/P-
buttons
---Frequency Counter15.625kHz±300Hz
R583 --- H.V./Power Supply CBA
Video---
Purpose:
carrier.
Symptom of Misadjustment:
incorrect, stripes will appear on the screen.
Test pointAdj. PointModeInput
(B-OUT)
Note:
1. Connect Oscilloscope to J219.
2. Input a color bar signal from RF input.
3. Press [0] button on the remote control unit and
4. Press [P+/P-] buttons on the remote control unit so
5. Turn the power off and on again.
To get minimum leakage of the color signal
If C-Trap Adjustment is
J219
TapeM. EQ.Spec.
---
minimum
J219 (B-Out)--- Main CBA
Enter the Service mode. (See page 1-6-1.)
select C-TRAP Mode.
that the carrier leakage B-Out (4.43MHz) value
becomes minimum on the oscilloscope.
P+/P-
buttons
Oscilloscope
Pattern Generator
Figure
---Color Bar
200mVp-p Max.
Fig. 1
1-6-2Z11PALEA
4. How to measure the standard
5. SECAM Black Level Adjustment
V-ENV value of Digital Studio
Picture Control
Purpose:
for the recording tape.
Symptom of Misadjustment:
back picture quality may fall. The picture will be tinted.
1. Insert a new tape (type: TDK 180) for the DSPC
2. Input the black raster signal from the video input
3. Enter the Service Mode. (See page 1-6-1.)
4. To enter the DSPC mode, press [1] button on the
5. Recording continues for 10 seconds in SP mode.
6. The tape is rewinded to the recording start point.
7. The unit enters the play mode automatically and
8. "OK" appears on the screen with blueback for 5
9. If SYNC. and CTL are none, "NG" appears on the
To set the recording condition appropriate
Recording or playing
alignment into the TV/VCR.
jack (VIDEO-IN).
remote control unit. Recording starts automatically
and “DSPC” appears on the display.
TVCR
DSPC
Fig. 2
After that, recording starts for 10 seconds in LP
mode.
the V-ENV levels of each SP and LP modes are
memorized into the EEPROM.
seconds, the unit enters the stop mode, and is
gone out from the factory mode.
screen with blueback for 5 seconds, the unit ejects
the cassette and is gone out from the factory mode.
Or, also when the V-ENV level in either of the SP
and LP mode is written, "NG" appears on the
screen with blueback for 5 seconds, the unit ejects
the cassette and is gone out from the factory model
TVCRTVCR
Purpose:
To set Black Level of the SECAM signal R-
Y/B-Y to Ref. level.
Symptom of Misadjustment:
If Black Level of the
SECAM signal R-Y/B-Y is incorrect, the picture is bluish or reddish in grayscale compared with PAL signal.
Test pointAdj. PointModeInput
Pin 1 of
CN303
P+/P-
buttons
---
SECAM
Gray Scale
TapeM. EQ.Spec.
---Pattern Generator---
1. Degauss the CRT and allow CRT to operate for 20
minutes before starting the alignment.
2. Input the SECAM Gray Scale signal from video
input.
3. Enter the Service Mode. (See page 1-6-1.)
4. To enter the C/D/S mode, press [p] on the
remote control unit.
5. To select SBR (SECAM Black Level R-Y), press [6]
button on the remote control unit.
6. Press [P+/P-] buttons to adjust Y signal to the black
ref. level.
7. To select SBB (SECAM Black Level B-Y), press [7]
button on the remote control unit.
8. Press [P+/P-] buttons to adjust Y signal to the black
ref. level.
Y Signal
1H
Black REF. Level
1H
1H
5mV/Div (10:1 Prove)
Fig. 4
OK
Normal
NG
Abnormal
Fig. 3
1-6-3Z11PALEA
6. V. Size Adjustment
8. H. Shift Adjustment
Purpose:
image.
Symptom of Misadjustment:
vertical height of image on the screen may not be
properly displayed.
Test pointAdj. PointModeInput
Screen
1. Enter the Service mode. (See page 1-6-1.)
2. Input monoscope pattern.
3. Press [P+/P-] buttons on the remote control unit so
To obtain correct vertical height of screen
If V. Size is incorrect,
P+/P-
buttons
TapeM. EQ.Spec.
---Pattern Generator90±5%
Press [9] button on the remote control unit and
select V-S Mode. (Press [9] button then display will
change to V-P and V-S).
that the monoscope pattern is 90±5% of display
size and the circle is round.
---Monoscope
7. V. Shift Adjustment
Purpose:
image.
Symptom of Misadjustment:
rect, vertical position of image on the screen may not
be properly displayed.
To obtain correct vertical position of screen
If V. position is incor-
Purpose:
size of screen image.
Symptom of Misadjustment:
size of screen image may not be properly displayed.
Test pointAdj. PointModeInput
Screen
1. Enter the Service mode. (See page 1-6-1.)
2. Input monoscope pattern.
3. Press [P+/P-] buttons on the remote control unit so
4. Turn the power off and on again.
To obtain correct horizontal position and
Horizontal position and
P+/P-
buttons
TapeM. EQ.Spec.
---Pattern Generator90±5%
Press [8] button on the remote control unit and
select H-P Mode.
that the left and right side of the monoscope pattern are equal to each other.
---Monoscope
9. Cut-off Adjustment
Purpose:
screen voltage.
Symptom of Misadjustment:
reddish, greenish or bluish.
Test pointAdj. PointModeInput
To adjust the beam current of R, G, B, and
White color may be
Test pointAdj. PointModeInput
Screen
TapeM. EQ.Spec.
---Pattern Generator90±5%
1. Enter the Service mode. (See page 1-6-1.)
Press [9] button on the remote control unit and
select V-P Mode. (Press [9] button then display will
change to V-P and V-S).
2. Input monoscope pattern.
3. Press [P+/P-] buttons on the remote control unit so
that the top and bottom of the monoscope pattern
are equal to each other.
P+/P-
buttons
---Monoscope
Screen
TapeM. EQ.Spec.
---Pattern Generator
Screen-Control
P+/P- buttons
Figure
PATTERN GENERATOR
EXT. INPUT
Ext.
See Reference
Notes below
Fig. 5
Black
Raster
1-6-4Z11PALEA
Notes:
Screen Control (FBT) --- H.V./Power Supply CBA
FBT= Fly Back Transformer
Use the Remote Control Unit
1. Degauss the CRT and allow CRT to operate for 20
minutes before starting the alignment.
2. Set the screen control to minimum position. Input
the Black raster signal from RF input.
3. Enter the Service Mode. (See page 1-6-1.)
Dimmed horizontal line appears on the CRT.
4. To enter the C/D/S mode, press the [p] button
on the remote control unit.
5. To enter the CUT OFF (R) mode, press [1] button
on the remote control unit.
6. Turn the screen control up until dimmed horizontal
line appears.
7. Press the [P+/P-] buttons until the horizontal line
becomes white.
8. To enter the C/D/S mode, press the [p] button
on the remote control unit.
9. To enter the CUT OFF (G) mode, press [2] button
on the remote control unit.
10.Press the [P+/P-] buttons until the horizontal line
becomes white.
11.To enter the C/D/S mode, press the [p] button
on the remote control unit.
12.To enter the CUT OFF (B) mode, press [3] button
on the remote control unit.
13.Press the [P+/P-] buttons until the horizontal line
becomes white.
14.Turn the screen control so that the horizontal line
adjusted white looks lightly.
15.Turn the power off and on again.
10. White Balance Adjustment
Purpose:
for pure white.
Symptom of Misadjustment:
or reddish.
Test pointAdj. PointModeInput
Screen
TapeM. EQ.Spec.
Note:
1. Operate the unit more than 20 minutes.
2. Face the unit to east. Degauss the CRT using De-
3. Input the White Raster (APL 100%).
4. Set the color analyzer to the CHROMA mode and
5. Enter the Service mode. Press [p] button on
6. Press [4] button on the remote control unit for Red
7. In each color mode, Press [P+/P-] buttons to adjust
8. Adjusting Red and Blue color so that the tempera-
9. At this time, Re-check that Horizontal line is white.
10. Turn off and on again to return to normal mode. Re-
Note:
adjustment, and attempt Cut Off Adj. if needed.
To mix red, green and blue beams correctly
White becomes bluish
Screen-Control
P+/P- buttons
---
Use remote control unit
gaussing Coil.
after zero point calibration, bring the optical receptor to the center on the tube surface (CRT).
the remote control.
adjustment. Press [5] button on the remote control
unit for Blue adjustment.
the values of color.
ture becomes 8500K (x : 290 / y : 300) ±3%.
If not, Re-adjust Cut-off Adjustment until the Horizontal Line becomes pure white.
ceive APL 100% white signal and Check Chroma
temperatures become 8500K (x : 290 / y : 300) ±3%.
Confirm that Cut Off Adj. is correct after this
Pattern Generator
Color analyzer
Figure
Color Ajalyzer
RF
See below
White Ras-
ter (APL
100%)
Fig. 6
1-6-5Z11PALEA
11. Sub-Brightness Adjustment
Purpose:
Symptom of Misadjustment:
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Test pointAdj. PointModeInput
White
Note:
1. Enter the Service Mode. (See page 1-6-1.)
2. Press MENU button. (Each time MENU button is
3. Turn the power off and on again.
To get proper brightness.
If Sub-Brightness is
Screen
TapeM. EQ.Spec.
---
Bar (A) in Fig. 7 --- 0 IRE
Then input SYMPTE signal from RF input.
pressed, display will change BRT, CNT, COL, TNT,
and SHP in that order.) Select BRT and press [P+/
P-] buttons so that the bar (A) in Fig. 7 is just visible.
P+/P-
buttons
Pattern
Generator
Figure
---SYMPTE
See below
ABC
Black
This bar
(A) just
visible
Fig. 7
12. Setting for CONTRAST,
COLOR, TINT and SHARP
Data Values
General
1. Enter the Service mode. (See page 1-6-1)
2. Press MENU button. (Each time MENU button is
pressed, display will change BRT, CNT, COL, TNT,
and SHP in that order.)
CONTRAST (CNT)
1. Press "MENU" button on the remote control unit.
Then select CNT display.
2. Press [P+/P-] buttons on the remote control unit so
that the value of "CONTRAST" (CNT) becomes 85.
COLOR (COL)
1. Press "MENU" button on the remote control unit.
Then select "COLOR" (CLR) display.
2. Press [P+/P-] buttons on the remote control unit so
that the value of "COLOR" (COL) becomes 55.
TINT (TNT)
1. Press "MENU" button on the remote control unit.
Then select "TINT" (TNT) display.
2. Press [P+/P-] buttons on the remote control unit so
that the value of "TINT" (TNT) becomes 57.
SHARP (SHP)
1. Press "MENU" button on the remote control unit.
Then select "SHARP" (SHP) display.
2. Press [P+/P-] buttons on the remote control unit
and select "1."
1-6-6Z11PALEA
13. Focus Adjustment
14. Head Switching Position Adjustment
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Test pointAdj. PointModeInput
ScreenFocus Control---Monoscope
TapeM. EQ.Spec.
---Pattern GeneratorSee below.
Note: Focus VR (FBT) --- H.V./Power Supply 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 clear
picture.
Purpose: Determine the Head Switching Point during
Playback.
Symptom of Misadjustment: May cause Head
Switching Noise or Vertical Jitter in the picture.
Note: Unit reads Head Switching Position automatically and displays it on the screen (Upper Left Corner).
1. Enter the Service Mode. (See page 1-6-1.)
Then press the number [5] button on the remote
control unit.
2. Playback the test tape (FL6A).
3. The Head Switching position will display on the
screen; if adjustment is necessary follow step 4.
6.5H(412.7µs) is preferable.
4. Press [P+/P-] buttons on the remote control unit if
necessary. The value will be changed in 0.5H steps
up or down. Adjustable range is up to 9.5H. If the
value is beyond adjustable range, the display will
change as:
Lower out of range: 0.0H
Upper out of range: -.-H
5. Turn the power off and on again.
1-6-7Z11PALEA
Adjustment Points and Test Points
H.V./Power Supply CBA Top View
Main CBA Top View
Focus-control
(Upper side)
R583
(H Adjustment)
VR601
+B ADJ
Screen-control
(Lower side)
TP504
GND
TP503
+B
TP002
RF-SW
TP001
IC202
CTL
TP003
V-OUT
TP004
TP007
CPB
A-OUT
J219
B-OUT
Pin 1 of CN303
(SECAM Black Level Adjustment)
TEST POINT INFORMATION
: Indicates a test point with a jumper wire across a hole in the PCB.
TEST POINTS NOT USED IN ELECTRICAL ADJUSTMENTS
Test Point
TP001
TP002
TP004
TP503
TP504
Mechanical Alignment Procedures
Mechanical Alignment Procedures
Mechanical Alignment Procedures
Electrical Adjustment Instructions
Electrical Adjustment Instructions
Used in:Page No.
15
2-3-3
2-3-3, 2-3-4
2-3-3, 2-3-4
1-6-1
1-6-1
1-6-8Z11PALEA
Servo/System Control Block Diagram
(DECK ASSEMBLY)
MAIN CBA
BLOCK DIAGRAMS
NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
D201
S-LED
AL+5V
TEST POINT INFORMATION
RS201
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
C-VIDEO
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
" " = SMD
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
PB-AUDIO SIGNALREC-AUDIO SIGNALMode : SP/REC
TU001
TU-AUDIO
TU-AUDIO
TU002
JK702
A-IN
A-IN(R)
A-IN(L)
A-OUT(R)
A-OUT(L)
21
21
JK751
2
6
1
3
(DECK ASSEMBLY)
Q758
IC754 (SW)
15
SW CTL
9 10 11
TU1
TU2
13
12
1
2
IC751 (SW)
1
2
5
3
SW CTL
10119
1ST-SND-H
SCART-MUTE
15
4
14
SCART-H
EXT-L
TO SERVO
/SYSTEM
CONTROL
BLOCK
WF7
52
53
54
(VIDEO/AUDIO/CHROMA/DEFLECTION/IF)
IC301
TUNER1
LINE
AUDIO
MUTE
+5V
Q852
ATT
50
IC401
(AUDIO SIGNAL PROCESS)
TUNER1
13
TUNER2
15
LINE
17
PB-ON
5
6
EQ
AMP
SP/LP-ON
MAIN CBA
IC801 (AMP)
7
WF9
7
OUTPUT
AMP
MUTE
5
98
1
SP-MUTE1
(FROM PIN 44 OF IC201)
INV
R
ATT
CN801
SP
SP-GND2
ALC
DET
ALC
P
1
LINE
AMP
REC-ON
JK801
HEADPHONE JACK
SP801
SPEAKER
MUTE
12
11
TP007
A-OUT
WF8
AUDIO
HEAD
AUDIO
ERASE
HEAD
ACE HEAD ASSEMBLY
FULL
ERASE
HEAD
FE HEAD
CL402
3 A-PB/REC
4 A-COM
6 AE-H
5 FE-H
CL403
1 FE-H
2 FE-H-GND
Q853
BIAS
OSC
Q851
Q854(PB=ON)
Q856
Q855(PB=ON)
SWITCHING
D-REC-OFF
1
2
+5V
AUTO
BIAS
3
100
AUDIO HD-SW
REC
AMP
SERIAL
DECODER
CONTROL
16
68 69
71
A-MUTE-H
SDATO SERVO/SYSTEM
SCL
CONTROL BLOCK
1-7-51-7-6T6300BLA
Chroma Block Diagram
NOTE FOR WIRE CONNECTORS:
1. PREFIX SYMBOL "CN" MEANS CONNECTOR.
(CAN DISCONNECT AND RECONNECT.)
" " = SMD
(TELETEXT DECODER)
IC901
ADC/
DATA SLICER
SYNC SW
I2C I/F
TELETEXT
DECODER
OSC/CLOCK
GENERATOR
TEXT CBA
FROM/TO
SERVO/SYSTEM
CONTROL BLOCK
11
20
Q904
19
Q901
3
2
27
28
29
30
41
42
CN303 is used for
adjustment at factory
I2C-OPEN
2. PREFIX SYMBOL "CL" MEANS WIRE-SOLDER
HOLES OF THE PCB.
(WIRE IS SOLDERED DIRECTLY.)
CN901CN751
BUFFER
BUFFER
X901
13.875
MHz
OSC
SCL
SDA
77Y-SW-OUT
22SYNC
44SDA
33SCL
66OSD-BLK
33OSD-B
44OSD-G
22OSD-R
(NO CONNECTION)
INT.MONITOR
I2C-OPEN2
SDA4
SCL5
CN752CN902
CN303
1
TEST POINT INFORMATION
:INDICATES A TEST POINT WITH A JUMPER WIRE ACROSS A HOLE IN THE PCB.
:USED TO INDICATE A TEST POINT WITH A COMPONENT LEAD ON FOIL SIDE.
:USED TO INDICATE A TEST POINT WITH NO TEST PIN.
:USED TO INDICATE A TEST POINT WITH A TEST PIN.
Q761
Q759
+5V
Q757
Q760
IC301
40
1
10
11
43
REC-AUDIO SIGNAL
(VIDEO/AUDIO/CHROMA/DEFLECTION/IF)
SERIAL
I/F
INTELLIGENT
MONITORING
SYNC
SEPARATION
CHROMA
TRAP
CHROMA
BPF
REC VIDEO SIGNALPB VIDEO SIGNALMode : SP/REC
MAIN CBA
LINE/PB
TUNER
LINE/PB
TUNER
CLOCK
CONTROL
CIRCUIT
34
36
32
X301
4.43MHz
VIDEO-OUT1
TU1-VIDEO
FROM
VIDEO BLOCK
SLOW-SW
RAPID-SW
FROM
VIDEO
BLOCK
OSD-B
OSD-G
OSD-R
C-VIDEO
8
16
7
11
15
JK751
IC201
(SYSTEM CONTROL/OSD)
C-VIDEO
56
SLOW-SW-IN
RAPID-SW-IN
WF18
WF17
TEXT-L
OSD-R
OSD-G
OSD-B
OSD-BLK
RGB CONT
V-SYNC
H-SYNC
82
64
63
62
60
30
22
29
59
58
IC752 (SW)
5
3
2
1
12
13
Q756
SW CTL
10911
15
14
+5V
LUMA
SIGNAL
4
V-SYNC
PROCESS
CIRCUIT
H-SYNC
PROCESS
CIRCUIT
PROCESS
CIRCUIT
PAL
DECODER
BASE BAND
SECAM
DECODER
1H DELAY LINE
17
21
CL301A
27
20
28
OSD MIX/RBG MATRIX/
BLANKING
16
15
14
BLUE2
GREEN3
RED
4
TO
CRT/H.V. BLOCK
CL301B
30
WF10
13
12
WF11
6
7
31
INV
CL302A
AFC2
H-DRIVE3
ACL6
V-RAMP-NF4
V-DRIVE7
FROM/TO
CRT/H.V. BLOCK
CL302B
T6300BLC1-7-71-7-8
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