Toshiba 14AF45, 14AF45C Schematic
FILE NO. 050-200508
(MFR’S VERSION A)
SERVICE MANUAL
COLOR TELEVISION
14AF45
14AF45C
DOCUMENT CREATED IN JAPAN, February, 2005
SERVICING NOTICES ON CHECKING
As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a mark, the designated
parts must be used.
4. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
6. AVOID AN X-RAY1. KEEP THE NOTICES
Safety is secured against an X-ray by considering about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathoderay tube.
PERFORM A SAFETY CHECK AFTER
7.
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1.
Unplug the plug from the AC outlet.
2.
Remove the antenna terminal on TV and turn
on the TV.
3.
Insulation resistance between the cord plug
terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
4.
If the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the 500V insulation
resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
Headphone jack
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be
found at the end of the SERIAL NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
IMPORTANT
When you exchange IC and Transistor with a heat sink, apply silicon grease on the contact section of
the heat sink. Befor applying new silicon grease, remove all the old silicon grease. (Old grease may
cause damages to the IC and Transistor.)
A1-1
14AF45/14AF45C
ABOUT LEAD FREE SOLDER (PbF)
Distinction of PbF PCB:
PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.
(Please refer to figures.)
Caution:
Pb free solder has a higher melting point than standard solder;
•
Typically the melting point is 50°F~70°F(30°C~40°C) higher.
Please use a soldering iron with temperature control and adjust it to 650°F ± 20°F (350°C ± 10°C).
In case of using high temperature soldering iron, please be carefull not to heat too long.
Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).
•
All products with the printed circuit board with PbF printing must be serviced with lead free solder.
•
When soldering or unsoldering, completely remove all of the solder from the pins or solder area,
and be sure to heat the soldering points with the lead free solder until it melts sufficiently.
Recommendations
Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.
A1-2
14AF45/14AF45C
TABLE OF CONTENTS
SERVICING NOTICES ON CHECKING.....................................................................................
HOW TO ORDER PARTS ..........................................................................................................
IMPORTANT ...............................................................................................................................
ABOUT LEAD FREE SOLDER (PbF)........................................................................................
TABLE OF CONTENTS..............................................................................................................
GENERAL SPECIFICATIONS ...................................................................................................
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP ...............................................................................................
2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................
SERVICE MODE LIST ................................................................................................................
CONFIRMATION OF HOURS USED .........................................................................................
WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................
ELECTRICAL ADJUSTMENTS..................................................................................................
BLOCK DIAGRAMS ...................................................................................................................
PRINTED CIRCUIT BOARDS
MAIN/CRT................................................................................................................................
SCHEMATIC DIAGRAMS
MICON .....................................................................................................................................
CHROMA .................................................................................................................................
DEFLECTION ..........................................................................................................................
POWER ...................................................................................................................................
SOUND ....................................................................................................................................
TUNER/STEREO.....................................................................................................................
COMB FILTER/AV ...................................................................................................................
CRT..........................................................................................................................................
WAVEFORMS .............................................................................................................................
MECHANICAL EXPLODED VIEWS...........................................................................................
MECHANICAL REPLACEMENT PARTS LIST .........................................................................
ELECTRICAL REPLACEMENT PARTS LIST...........................................................................
A1-1
A1-1
A1-1
A1-2
A2-1
A3-1~A3-10
B1-1
B2-1, B2-2
C-1
C-1
C-1
D-1~D-6
E-1, E-2
F-1~F-4
G-1, G-2
G-3, G-4
G-5, G-6
G-7, G-8
G-9, G-10
G-11, G-12
G-13, G-14
G-15, G-16
H-1, H-2
I-1, I-2
J1-1, J1-2
J2-1~J2-8
A2-1
14AF45/14AF45C
GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 14 inch / 357mmV
G-2 Tuning Broadcasting System US System M
G-3 Power Power Source AC 120V AC 60Hz
G-4 Regulation Safety UL
G-5 Temperature Operation +5oC ~ +40oC
G-6 Operating Humidity Less than 80% RH
System CRT Type Flat
Color System NTSC
Speaker 2 Speaker
Sound Output MAX
NTSC3.58+4.43 /PAL60Hz No
System Tuner and System 1Tuner
Receive CH Destination USA(W/ CATV)
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
Preset CH
Stereo/Dual TV Sound Yes
Tuner Sound Muting Yes
Power Consumption at AC
Protector Power Fuse Yes
Magnetic Field BV/BH +0.45G/0.18G
Position Front Side
Size 1.6 x 2.8 Inch
Impedance 8 ohm
2.5+2.5 W
10%(Typical) 2.0+2.0 W
CH Coverage A - I, J - W, W+1 - W+84
FP-FS 4.50MHz
DC
80 W at AC 120 V 60 Hz
Stand by (at AC) 3 W at AC 120 V 60 Hz
Per Year -- kWh/Year
Safety Circuit Yes
IC Protector(Micro Fuse) No
Radiation FCC
X-Radiation DHHS
Storage -20oC ~ +60oC
2 - 69, 4A, A-5 - A-1,
No
A3-1 14AF45
GENERAL SPECIFICATIONS
G-7 On Screen Menu Yes
G-8 OSD Language English French Spanish
Display Menu Type Icon
Picture Yes
Audio Yes
Set Up Yes
Option
Control Level Yes
Stereo,Audio Output,SAP Yes
Video Yes
Color Stream Yes
Channel(TV/Cable) Yes
CH Label Yes
Game Timer Yes
Sleep Timer Yes
Sound Mute Yes
V-chip Rating Yes
16: 9 Yes
Contrast Yes
Brightness Yes
Color Yes
Tint Yes
Sharpness Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound On/Off Yes
Surround On/Off Yes
TV/CATV Yes
Auto CH Memory Yes
Add/ Delete Yes
Yes
Language Yes
CH Label Yes
Favorite CH Yes
V-Chip Yes
Lock Yes
On/Off Timer Yes
Color Stream DVD/DTV Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Tuning No
Bass Yes
Treble Yes
Balance Yes
Back Light No
G-9 Clock and Sleep Timer Max Time 120 Min
Timer Step
On/Off Timer Program(On Timer / Off Timer / Clock) Yes
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
10 Min
A3-2 14AF45
GENERAL SPECIFICATIONS
G-10 Remote Unit RC-GQ
Control Glow in Dark Remocon Yes
Format Toshiba
Remocon Format Toshiba
Custom Code
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
100 Yes
CH Up Yes
CH Down Yes
Volume Up Yes
Volume Down Yes
Cap/Text(TV/Caption/Text) Yes
1/2(CH1/CH2) Yes
TV/Video(TV/AV) Yes
CH RTN(Quick View) Yes
Sleep Yes
RECall(Call) Yes
Reset Yes
Menu/Enter Yes
Mute Yes
Exit Yes
MTS(Audio Select) Yes
Fav.Up Yes
Fav.Down Yes
16: 9 Yes
Multi Brand Keys CH Up(VCR) No
CH Down(VCR) No
Pause/Still No
TV/VCR(VCR) No
FF No
Rew No
Rec No
Play No
Stop No
TV No
VCR No
Cable No
DVD No
CODE No
DVD MENU < No
DVD MENU > No
DVD CLEAR No
TOP MENU No
DVD MENU No
TV:40-BF h
30 Keys
A3-3 14AF45
GENERAL SPECIFICATIONS
G-11 Features Auto Degauss Yes
G-12 Accessories Owner's Manual Language English/Spanish
Auto Shut Off Yes
Canal+ No
CATV Yes
Anti-theft No
Rental No
Memory(Last CH) Yes
Memory(Last Volume) Yes
V-Chip Yes
Type
BBE No
Auto Search No
CH Allocation No
SAP Yes
Just Clock Function No
CH Label Yes
VM Circuit No
Full OSD No
Premiere No
Comb Filter Yes
Auto CH Memory Yes
Hotel Lock No
Closed Caption Yes
Stable Sound Yes
FBT Leak Test Protect Yes
CH Lock Yes
Video Lock Yes
Game Timer (Max Time:120 Min) Yes
Energy Star No
Favorite CH Yes
Surround Yes
16:9 Mode Yes
W/ Warranty Yes
Remote Control Unit Yes
Rod Antenna
Poles
Terminal
Loop Antenna
Terminal -
U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Station List
Important Safety Instructions
Dew/AHC Caution Sheet
AC Plug Adapter
Quick Set-up Sheet
Battery Yes
UM size x pcs UM-4 x 2
OEM Brand
AC Cord
AV Cord (2Pin-1Pin)
Registration Card (NDL Card) Yes
PTB Sheet
ESP Card
300 ohm to 75 ohm Antenna Adapter
USA,Toshiba Type
2 Lines
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A3-4 14AF45
GENERAL SPECIFICATIONS
G-13 Interface Switch Front Power Yes
Rear AC/DC No
Indicator Power
Terminals Front Video Input = VIDEO2
Rear Video Input(Rear1) = VIDEO1
G-14 Set Size Approx. W x D x H (mm)
G-15 Weight Net (Approx.) 11.0kg
G-16 Carton Master Carton
Gift Box Material Double/Brown
Drop Test
Container Stuffing
G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM
PCB Non-Halogen Demand
G-18 Environment Pb-free Soldering Yes
Parts Specification(Phase3 : based on RoHS) Yes
System Select No
Main Power SW No
Sub Power No
Channel Up Yes
Channel Down Yes
Volume Up Yes
Volume Down Yes
TV/CATV Selector No
Degauss No
Main Power SW No
Stand-by No
On Timer No
Audio Input = VIDEO2
Other Terminal
Video Input(Rear2) = VIDEO2 No
Audio Input(Rear1) = VIDEO1
Audio Input(Rear2) = VIDEO2 No
Video Output No
Audio Output No
Euro Scart No
Color Stream
S Input Yes
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input
AC Outlet No
Gross (Approx.) 13.0 kg
Content ---Material --
Dimensions W x D x H(mm) -- x -- x --
Description of Origin --
Dimensions W x D x H(mm) 540 x 460 x 465
Description of Origin Yes
Height (cm) 62
Cabinet Rear PS 94V0 DECABROM
Eyelet Demand Yes
Yes(RED)
RCA
RCA x 2
Head Phone
RCA
RCA x 2
RCA x 3
F Type
432 x 386 x 344.5
( 24.3 lbs)
( 28.7 lbs)
No
Sets
/--
Natural Dropping At 1 Corner / 3
Edges / 6 Surfaces
550
Sets/40' container
No
A3-5 14AF45
GENERAL SPECIFICATIONS
G-1 TV CRT CRT Size / Visual Size 14 inch / 357mmV
G-2 Tuning Broadcasting System US System M
G-3 Power Power Source AC 120V AC 60Hz
G-4 Regulation Safety CSA
G-5 Temperature Operation +5oC ~ +40oC
G-6 Operating Humidity Less than 80% RH
System CRT Type Flat
Color System NTSC
Speaker 2 Speaker
Sound Output MAX
NTSC3.58+4.43 /PAL60Hz No
System Tuner and System 1Tuner
Receive CH Destination USA(W/ CATV)
Intermediate Picture(FP) 45.75MHz
Frequency Sound(FS) 41.25MHz
Preset CH
Stereo/Dual TV Sound Yes
Tuner Sound Muting Yes
Power Consumption at AC
Protector Power Fuse Yes
Magnetic Field BV/BH +0.45G/0.18G
Position Front Side
Size 1.6 x 2.8 Inch
Impedance 8 ohm
2.5+2.5 W
10%(Typical) 2.0+2.0 W
CH Coverage A - I, J - W, W+1 - W+84
FP-FS 4.50MHz
DC
80 W at AC 120 V 60 Hz
Stand by (at AC) 3 W at AC 120 V 60 Hz
Per Year -- kWh/Year
Safety Circuit Yes
IC Protector(Micro Fuse) No
Radiation IC
X-Radiation HWC
Storage -20oC ~ +60oC
2 - 69, 4A, A-5 - A-1,
No
A3-6 14AF45C
GENERAL SPECIFICATIONS
G-7 On Screen Menu Yes
G-8 OSD Language English French Spanish
Display Menu Type Icon
Picture Yes
Audio Yes
Set Up Yes
Option
Control Level Yes
Stereo,Audio Output,SAP Yes
Video Yes
Color Stream Yes
Channel(TV/Cable) Yes
CH Label Yes
Game Timer Yes
Sleep Timer Yes
Sound Mute Yes
V-chip Rating No
16: 9 Yes
Contrast Yes
Brightness Yes
Color Yes
Tint Yes
Sharpness Yes
Bass Yes
Treble Yes
Balance Yes
Stable Sound On/Off Yes
Surround On/Off Yes
TV/CATV Yes
Auto CH Memory Yes
Add/ Delete Yes
Yes
Language Yes
CH Label Yes
Favorite CH Yes
V-Chip No
Lock Yes
On/Off Timer Yes
Color Stream DVD/DTV Yes
Volume Yes
Brightness Yes
Contrast Yes
Color Yes
Tint Yes
Sharpness Yes
Tuning No
Bass Yes
Treble Yes
Balance Yes
Back Light No
G-9 Clock and Sleep Timer Max Time 120 Min
Timer Step
On/Off Timer Program(On Timer / Off Timer / Clock) Yes
Wake Up Timer No
Timer Back-up (at Power Off Mode) more than -- Min Sec
10 Min
A3-7 14AF45C
GENERAL SPECIFICATIONS
G-10 Remote Unit RC-GQ
Control Glow in Dark Remocon Yes
Format Toshiba
Remocon Format Toshiba
Custom Code
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 Yes
5 Yes
6 Yes
7 Yes
8 Yes
9 Yes
0 Yes
100 Yes
CH Up Yes
CH Down Yes
Volume Up Yes
Volume Down Yes
Cap/Text(TV/Caption/Text) Yes
1/2(CH1/CH2) Yes
TV/Video(TV/AV) Yes
CH RTN(Quick View) Yes
Sleep Yes
RECall(Call) Yes
Reset Yes
Menu/Enter Yes
Mute Yes
Exit Yes
MTS(Audio Select) Yes
Fav.Up Yes
Fav.Down Yes
16: 9 Yes
Multi Brand Keys CH Up(VCR) No
CH Down(VCR) No
Pause/Still No
TV/VCR(VCR) No
FF No
Rew No
Rec No
Play No
Stop No
TV No
VCR No
Cable No
DVD No
CODE No
DVD MENU < No
DVD MENU > No
DVD CLEAR No
TOP MENU No
DVD MENU No
TV:40-BF h
30 Keys
A3-8 14AF45C
GENERAL SPECIFICATIONS
G-11 Features Auto Degauss Yes
G-12 Accessories Owner's Manual Language English / French
Auto Shut Off Yes
Canal+ No
CATV Yes
Anti-theft No
Rental No
Memory(Last CH) Yes
Memory(Last Volume) Yes
V-Chip No
BBE No
Auto Search No
CH Allocation No
SAP Yes
Just Clock Function No
CH Label Yes
VM Circuit No
Full OSD No
Premiere No
Comb Filter Yes
Auto CH Memory Yes
Hotel Lock No
Closed Caption Yes
Stable Sound Yes
FBT Leak Test Protect Yes
CH Lock Yes
Video Lock Yes
Game Timer (Max Time:120 Min) Yes
Energy Star No
Favorite CH Yes
Surround Yes
16:9 Mode Yes
Remote Control Unit Yes
Rod Antenna
Loop Antenna
U/V Mixer
DC Car Cord (Center+)
Guarantee Card
Warning Sheet
Circuit Diagram
Antenna Change Plug
Service Station List
Important Safety Instructions
Dew/AHC Caution Sheet
AC Plug Adapter
Quick Set-up Sheet
Battery Yes
AC Cord
AV Cord (2Pin-1Pin)
Registration Card (NDL Card)
PTB Sheet
ESP Card
300 ohm to 75 ohm Antenna Adapter
Type
2 Lines
W/ Warranty Yes
Poles
Terminal
Terminal -
UM size x pcs UM-4 x 2
OEM Brand
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
A3-9 14AF45C
GENERAL SPECIFICATIONS
g
G-13 Interface Switch Front Power Yes
Rear AC/DC No
Indicator Power
Terminals Front Video Input = VIDEO2
Rear Video Input(Rear1) = VIDEO1
G-14 Set Size Approx. W x D x H (mm)
G-15 Weight Net (Approx.) 11.0kg
G-16 Carton Master Carton
Gift Box Material Double/Brown
Drop Test
Container Stuffing
G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM
PCB Non-Halogen Demand
G-18 Environment Pb-free Soldering Yes
Parts Specification(Phase3 : based on RoHS) Yes
System Select No
Main Power SW No
Sub Power No
Channel Up Yes
Channel Down Yes
Volume Up Yes
Volume Down Yes
TV/CATV Selector No
Degauss No
Main Power SW No
Stand-by No
On Timer No
Audio Input = VIDEO2
Other Terminal
Video Input(Rear2) = VIDEO2 No
Audio Input(Rear1) = VIDEO1
Audio Input(Rear2) = VIDEO2 No
Video Output No
Audio Output No
Euro Scart No
Color Stream
S Input Yes
Diversity No
Ext Speaker No
DC Jack 12V(Center +) No
VHF/UHF Antenna Input
AC Outlet No
Gross (Approx.) 13.0 kg
Content ---Material --
Dimensions W x D x H(mm) -- x -- x --
Description of Origin --
Dimensions W x D x H(mm) 540 x 460 x 465
Description of Origin Yes
Height (cm) 62
Cabinet Rear PS 94V0 DECABROM
Eyelet Demand Yes
Yes(RED)
RCA
RCA x 2
Head Phone
RCA
RCA x 2
RCA x 3
F Type
432 x 386 x 344.5
( 24.3 lbs)
( 28.7 lbs)
No
Sets
/--
Natural Dropping At 1 Corner / 3
550
es / 6 Surfaces
Ed
Sets/40' container
No
A3-10 14AF45C
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF ANODE CAP
Read the following NOTED items before starting work.
*
After turning the power off there might still be a potential
voltage that is very dangerous. When removing the
Anode Cap, make sure to discharge the Anode Cap's
potential voltage.
*
Do not use pliers to loosen or tighten the Anode Cap
terminal, this may cause the spring to be damaged.
REMOVAL
1. Follow the steps as follows to discharge the Anode Cap.
(Refer to Fig. 1-1.)
Connect one end of an Alligator Clip to the metal part of a
flat-blade screwdriver and the other end to ground.
While holding the plastic part of the insulated Screwdriver,
touch the support of the Anode with the tip of the
Screwdriver.
A cracking noise will be heard as the voltage is discharged.
GND on the CRT
3. After one side is removed, pull in the opposite direction to
remove the other.
NOTE
Take care not to damage the Rubber Cap.
INSTALLATION
1. Clean the spot where the cap was located with a small
amount of alcohol. (Refer to Fig. 1-3.)
Location of Anode Cap
Fig. 1-3
NOTE
Confirm that there is no dirt, dust, etc. at the spot where
the cap was located.
2.3.Arrange the wire of the Anode Cap and make sure the
wire is not twisted.
Turn over the Rubber Cap. (Refer to Fig. 1-4.)
Screwdriver
Alligator Clip
GND on the CRT
Flip up the sides of the Rubber Cap in the direction of the
2.
arrow and remove one side of the support.
(Refer to Fig. 1-2.)
Rubber Cap
CRT
Support
Support
CRT
Fig. 1-1
Fig. 1-2
Fig. 1-4
4. Insert one end of the Anode Support into the anode button,
then the other as shown in Fig. 1-5.
Support
CRT
5.6.Confirm that the Support is securely connected.
Put on the Rubber Cap without moving any parts.
B1-1 14AF45/14AF45C
Fig. 1-5
DISASSEMBLY INSTRUCTIONS
2.
REMOVAL AND INSTALLATION OF
FLAT PACKAGE IC
REMOVAL
Put Masking Tape (cotton tape) around the Flat Package
1.
IC to protect other parts from any damage.
(Refer to Fig. 2-1.)
NOTE
Masking is carried out on all the parts located within 10
mm distance from IC leads.
When IC starts moving back and forth easily after
3.
desoldering completely, pickup the corner of the IC using a
tweezers and remove the IC by moving with the IC
desoldering machine. (Refer to Fig. 2-3.)
NOTE
Some ICs on the PCB are affixed with glue, so be
careful not to break or damage the foil of each IC leads
or solder lands under the IC when removing it.
Blower type IC
desoldering
machine
Masking Tape
(Cotton Tape)
Heat the IC leads using a blower type IC desoldering
2.
IC
machine. (Refer to Fig. 2-2.)
NOTE
Do not rotate or move the IC back and forth , until IC
can move back and forth easily after desoldering the
leads completely.
Blower type IC
desoldering machine
Fig. 2-1
Tweezers
IC
Peel off the Masking Tape.4.
Absorb the solder left on the pattern using the Braided
5.
Shield Wire. (Refer to Fig. 2-4.)
NOTE
Do not move the Braided Shield Wire in the vertical
direction towards the IC pattern.
Fig. 2-3
Braided Shield Wire
Soldering Iron
IC
Fig. 2-2
IC pattern
Fig. 2-4
B2-1 14AF45/14AF45C
DISASSEMBLY INSTRUCTIONS
INSTALLATION
Take care of the polarity of new IC and then install the new
1.
IC fitting on the printed circuit pattern. Then solder each
lead on the diagonal positions of IC temporarily.
(Refer to Fig. 2-5.)
Soldering Iron
Solder temporarily
Supply the solder from the upper position of IC leads
2.
sliding to the lower position of the IC leads.
(Refer to Fig. 2-6.)
Solder temporarily
Fig. 2-5
When bridge-soldering between terminals and/or the
4.
soldering amount are not enough, resolder using a Thin-tip
Soldering Iron. (Refer to Fig. 2-8.)
Thin-tip Soldering Iron
IC
Fig. 2-8
Finally, confirm the soldering status on four sides of the IC
5.
using a magnifying glass.
Confirm that no abnormality is found on the soldering
position and installation position of the parts around the IC.
If some abnormality is found, correct by resoldering.
NOTE
When the IC leads are bent during soldering and/or
repairing, do not repair the bending of leads. If the
bending of leads are repaired, the pattern may be
damaged. So, always be sure to replace the IC in this
case.
Soldering IronSolder
IC
Supply soldering
from upper position
to lower position
Fig. 2-6
Absorb the solder left on the lead using the Braided Shield
3.
Wire. (Refer to Fig. 2-7.)
NOTE
Do not absorb the solder to excess.
Soldering Iron
IC
Braided Shield Wire
Fig. 2-7
B2-2 14AF45/14AF45C
SERVICE MODE LIST
This unit is provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter to the Service Mode, press both set key and remote control key for more than 2 seconds.
Set Key
VOL. (-) MIN
VOL. (-) MIN
VOL. (-) MIN
VOL. (-) MIN
Remocon Key Operations
0
1
6
9
Releasing of V-CHIP PASSWORD.
Initialization of factory data.
NOTE:
POWER ON total hours is displayed on the screen.
Refer to the "CONFIRMATION OF HOURS USED".
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).
Do not use this for normal servicing.
If you set factory initialization, the memories are reset such as the channel setting,
and the POWER ON total hours.
CONFIRMATION OF HOURS USED
POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1.
Set the VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and Channel
button (6) on the remote control for more than 2 seconds.
3.
After the confirmation of using hours, turn off the power.
ADDRESS DATA
INIT 00 50
CRT ON 0010
FIG. 1
Initial setting content of MEMORY IC.
POWER ON total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
NOTE: No need to set data after position INI 1F due to the adjustment value.
INI
+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F
50
00
50
10
1.
Enter DATA SET mode by setting VOLUME to minimum.
2.
Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
3.
ADDRESS is now selected and should "blink". Using the VOL. UP/DOWN button on the remote, step through the ADDRESS
until required ADDRESS to be changed is reached.
4.
Press ENTER to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using VOL. UP/DOWN button until required DATA value has been selected.
6.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 3 to 6 until all data has been checked.
8.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
After the data input, set to the initializing of shipping.
9.
Turn POWER on.
10.
Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.
11.
After the finishing of the initializing of shipping, the unit will turn off automatically.
The unit will now have the correct DATA for the new MEMORY IC.
00
45 5E B3 24 B5 *1 AC 0B 04 40 40 40 7FE8 0A
00 01 00 0000
00 28 0F 0D
Table 1
A6 88 42
E2
00
*1
INI
08
USA CANADA
39 38
C-1 14AF45/14AF45C
ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
•
Use an isolation transformer when performing any
service on this chassis.
•
Before removing the anode cap, discharge electricity
because it contains high voltage.
•
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
•
When you exchange IC and Transistor with a heat sink,
apply silicon grease on the contact section of the heat
sink. Befor applying new silicon grease, remove all the
old silicon grease. (Old grease may cause damages to
the IC and Transistor.)
Prepare the following measurement tools for electrical
adjustments.
1. Oscilloscope
2. Digital Voltmeter
3. Multi-sound Generator
4. Pattern Generator
On-Screen Display Adjustment
1. In the condition of NO indication on the screen.
Press the VOL. DOWN button on the set and the
Channel button (9) on the remote control for more than 2
seconds to appear the adjustment mode on the screen
as shown in Fig. 1-1.
TV
2. BASIC ADJUSTMENTS
2-1: CONSTANT VOLTAGE
1.
Place the set in AV MODE without signal.
2.
Connect the digital voltmeter to the TP003.
3.
Adjust the VR502 until the digital voltmeter is 115 ± 1.0V.
2-2: CUT OFF
1.
Place the set in Aging Test for more than 15 minutes.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (01) on the remote control to
select “CUT OFF”.
4.
Adjust the Screen Volume until a dim raster is obtained.
2-3: WHITE BALANCE
NOTE: Adjust after performing CUT OFF adjustment.
1.
Place the set in Aging Test for more than 10 minutes.
2.
Receive the gray scale pattern from the Pattern Generator.
3.
Using the remote control, set the brightness and contrast
to normal position.
4.
Activate the adjustment mode display of Fig. 1-1 and press
the channel button (12) on the remote control to
select “R CUT OFF”.
5.
Press the CH. UP/DOWN button on the remote control to
select the “R. BIAS”, “G. BIAS”, “B. BIAS”, “B. DRIVE” or
“R. DRIVE”.
6.
Adjust the VOL. UP/DOWN button on the remote control
to whiten the R. BIAS, G. BIAS, B. BIAS, B. DRIVE and
R. DRIVE at each step tone sections equally.
7.
Perform the above adjustments 5 and 6 until the white
color is achieved.
00 OSD 36
Fig. 1-1
2.3.Use the Channel UP/DOWN button or Channel button
(0-9) on the remote control to select the options shown
in Fig. 1-2.
Press the MENU button on the remote control to end the
adjustments.
FUNCTION
NO.
OSD H
00
CUT OFF
01
H. VCO
02
H. PHASE
03
AFC GAIN
04
V. SHIFT
05
H. SIZE
06
V. SIZE
07
V. LINERITY
08
VS CORRECTION
09
R DRIVE
10
B DRIVE
11
R CUT OFF
12
G CUT OFF
13
B CUT OFF
14
BRIGHT MAX
15
BRIGHT CENT
16
BRIGHT MIN
17
CONTRAST MAX
18
FUNCTION
NO.
CONTRAST CENT
19
CONTRAST MIN
20
COLOR MAX
21
COLOR CENTER
22
COLOR MIN
23
TINT
24
SHARPNESS
25
Cb DELAY FINE
26
Cr DELAY FINE
27
Cb PEDESTAL ADJ
28
Cr PEDESTAL ADJ
29
PARABOLA
30
CORNER
31
TRAPWZIUM
32
LEVEL
33
SEPARATION1
34
SEPARATION2
35
READ DATA
88
Fig. 1-2
2-4: FOCUS
1.
Receive the monoscope pattern.
2.
Turn the Focus Volume fully counterclockwise once.
3.
Adjust the Focus Volume until picture is distinct.
2-5: HORIZONTAL POSITION
1.
Receive the center cross signal from the Pattern
Generator.
2.
Using the remote control, set the brightness and
contrast to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (03) on the remote control to
select “H.PHAS”.
4.
Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
right and left becomes minimum.
D-1 14AF45/14AF45C
ELECTRICAL ADJUSTMENTS
2-6: VERTICAL POSITION
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask. (Refer to Fig. 2-1)
horizontal line
Notch
Shadow mask
Fig. 2-1
2-7: VERTICAL SIZE
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (07) on the remote control to
select “V. SIZE”.
4.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes 9 ± 2%.
2-8: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-7.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Position and Vertical Size adjustments.
Receive the monoscope pattern.
1.
Using the remote control, set the brightness, contrast,
2.
to normal position.
Activate the adjustment mode display of Fig. 1-1 and
3.
press the channel button (08) on the remote control to
select “V. LIN”.
Press the VOL. UP/DOWN button on the remote control
4.
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
2-10: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1.
Set the multi-sound signal generator for each different Lch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz) and
receive the RF.
2.
Connect the oscilloscope to the Audio Out Jack.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
4.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the audio output wave becomes a fine sine
wave.
5.
Press the CH UP button once the set to “SEP 2” mode.
Then perform the above adjustment 4.
Method (2)
1.
Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
2.
Connect the oscilloscope to the Audio Out Jack (R-ch).
3.
Press the AUDIO SELECT button on the remote control to
set to the stereo mode.
4.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select “SEP 1”.
5.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the R-ch output becomes minimum.
6.
Set the multi-sound signal generator L-ch=Non input,
R-ch=1KHz and receive the RF.
7.
Connect the oscilloscope to the Audio Out Jack (L-ch).
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (35) on the remote control to
select “SEP 2”.
9.
Press the VOL. UP/DOWN button on the remote control to
adjust it until the L-ch output becomes minimum.
The output difference of the between with Filter and
without Filter should be more than 25db for both L and R.
2-11: OSD POSITION
1.2.Activate the adjustment mode display of Fig. 1-1.
Press the VOL. UP/DOWN button on the remote
control until the difference of A and B becomes
minimum. (Refer to Fig. 2-2)
2-9: LEVEL
1.
Connect the AC voltmeter to pin 6 of CP101.
2.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select “LEVEL”.
3.
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 2mV.
TV
00 OSD 36
BA
D-2 14AF45/14AF45C
Fig. 2-2
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