Panasonic CT-13R17B, CT-13R27W, CT-13R37S Schematic

ORDER NO. MTNC020409C1
B1

Service Manual

Color Television

Main Manual

Panasonic

Models

CT-13R17B
CT-13R27W
CT-13R37S

This service manual is issued as a service guide for the models listed above.
Included in this manual are a set of schematic, block diagrams, functional descriptions, alignment procedures,
disassembly procedures and a complete parts list.

Chassis

TMB535
TMB535
TMB535

“WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.”

The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this Main Manual.

Copyright 2002 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
To enter the Service Mode, press both set key and remote control key for more than 1 second.

Set Key

VOL. (-) MIN 0

Remocon Key

Operations

Releasing of V-CHIP PASSWORD.
User Reset.

VOL. (-) MIN 1

NOTE: If you set a factory initialization, the memories are reset such as the

channel setting, and the POWER ON total hours.

Remocon code selection.

VOL. (-) MIN 3

NOTE:

If you perform the remocon code selection, the remocon cannot be used.
So, do not select the remocon code for the normal servicing.

POWER ON total hours is displayed on the screen.
Refer to the "CONFIRMATION OF HOURS USED".

VOL. (-) MIN

6

Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

VOL. (-) MIN

9

Display of the Adjustment MENU on the screen.
Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

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 1 second.

3.

After the confirmation of using hours, turn off the power.

ADDRESS DATA

INIT 00 08
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.

+2INI +0 +1 +3 +4

00

1B

24 09 09 0A

BD

Table 1

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 1 second.
ADDRESS and DATA should appear as FIG 1.

3.

ADDRESS is now selected and should "blink". Using the CH. UP/DOWN button on the remote, step through the
ADDRESS until required ADDRESS to be changed is reached.

4.

Press VOL. UP/DOWN button 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 CH. UP/DOWN button 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.

The unit will now have the correct DATA for the new MEMORY IC.

+A

+9+5 +6 +7 +8

4408 60 98 13

00 D5 FF A5

25

+F+B +C +D +E

C-1

ELECTRICAL ADJUSTMENTS

1.

BEFORE MAKING ELECTRICAL
ADJUSTMENTS

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 for a heat sink,

•
apply the silicon grease (YG6260M) on the contact
section of the heat sink. Before applying new silicon
grease, remove all the old silicon grease. (Old grease may
cause damages to the IC and Transistor.)

The adjustments are needed for each mode, RF mode

•

and AV mode. Perform the adjustments refering each
adjustment items.

Prepare the following measurement tools for electrical
adjustments.

1. Oscilloscope

2. Digital Voltmeter

3. Pattern Generator

On-Screen Display Adjustment

In the condition of NO indication on the screen.

1.

Press the VOL. DOWN button on the set and the Channel
button (9) on the remote control for more than 1 second to
appear the adjustment mode on the screen as shown in
Fig. 1-1.

TV

2. BASIC ADJUSTMENTS

2-1: RF AGC (RF)

Place the set with Aging Test for more than 15 minutes.

1.
Receive the VHF HIGH (63dB).

2.
Connect the digital voltmeter to the W043.

3.
Activate the adjustment mode display of Fig. 1-1 and

4.
press the channel button (02) on the remote control to
select "RF.AGC".
Press the VOL. UP/DOWN button on the remote

5.
control until the digital voltmeter is 2.50 ± 0.05V.

2-2: CUT OFF (RF)

1.

Adjust the unit to the following settings.
R.DRIVE=10, B.DRIVE=10, R.BIAS=64, G.BIAS=64,
B.BIAS=64, BRIGHTNESS=120, CONTRAST=40.

2.

Place the set with Aging Test for more than 15 minutes.

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 (RF)

NOTE: Adjust after performing CUT OFF adjustment.

1.

Place the set with 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 (10) on the remote control to
select “R. BIAS”.

5.

Press the CH. UP/DOWN button on the remote control to
select the “R. BIAS”, “G. BIAS”, “B. BIAS”, “R. DRIVE” or
“B. DRIVE”.

6.

Adjust the VOL. UP/DOWN button on the remote control
to whiten the R. BIAS, G. BIAS, B. BIAS, R. DRIVE, and
B. DRIVE at each step tone sections equally.

7.

Perform the above adjustments 5 and 6 until the white
color is looked like a white.

00 OSD 15

2.

Use the Channel UP/DOWN button or Channel button
(0-9) on the remote control to select the options shown
in Fig. 1-2.

3.

Press the ACTION button on the remote control to end
the adjustments.

FUNCTION

NO.

OSD H

00

CUT OFF

01

RF AGC

02

VIF VCO

03

H.VCO

04

H.PHASE

05

V.SIZE

06

V.SHIFT

07

R.DRIVE

08

B.DRIVE

09

R.BIAS

10

G.BIAS

11

B.BIAS

12

BRIGHT CENT

13

BRIGHT MAX

14

BRIGHT MIN

15

FUNCTION

NO.

CONTRAST CENT

16

CONTRAST MAX

17

CONTRAST MIN

18

COLOR CENT

19

COLOR MAX

20

COLOR MIN

21

TINT

22

SHARPNESS

23

FM LEVEL

24

LEVEL

25

SEPARATION 1

26

SEPARATION 2

27

TEST MONO

28

TEST STEREO

29

X-RAY TEST

30

Fig. 1-1

Fig. 1-2

2-4: FOCUS (RF)

1.

Receive a broadcast.

2.

Turn the Focus Volume fully counterclockwise once.

3.

Adjust the Focus Volume until picture is distinct.

2-5: VIF VCO (RF)

Place the set with Aging Test for more than 10 minutes.

1.
Receive the cross hatch signal from the Pattern Genera-

2.
tor.
Connect the digital voltmeter between the pin 5 of

3.
CP601 and the GND.
Activate the adjustment mode display of Fig. 1-1 and

4.
press the channel button (03) on the remote control to
select "V.VCO".
Press the VOL. UP/DOWN button on the remote control

5.
until the digital voltmeter is 2.5V.

D-1

ELECTRICAL ADJUSTMENTS

2-6: HORIZONTAL PHASE (RF)

1.

Receive the center cross signal from the Pattern
Generator.

2.

Activate the adjustment mode display of Fig. 1-1 and
press the channel button (05) on the remote control to
select "H.PHAS".

3.

Press the VOL. UP/DOWN button on the remote
control until the right and left screen size of the vertical
line becomes the same.

2-7: VERTICAL SIZE (RF)

1.

Receive the cross hatch signal from the Pattern Genera­tor.

2.

Using the adjustment control, set the brightness and
contrast to normal position.

3.

Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select "V.SIZE".

4.

Press the VOL. UP/DOWN button on the remote control
until the rectangle on the center of the screen becomes
square.

5.

Receive a broadcast and check if the picture is normal.

2-8: VERTICAL SHIFT (RF)

1.

Receive the center cross signal from the Pattern
Generator.

2.

Activate the adjustment mode display of Fig. 1-1 and
press the channel button (07) on the remote control to
select "V.SFT".

3.

Press the VOL. UP/DOWN button on the remote
control until the horizontal line becomes fit to the notch
of the shadow mask.

2-11: SUB TINT/SUB COLOR (RF, AV)

1.

Receive the color bar pattern. (RF Input)

2.

Activate the adjustment mode display of Fig. 1-1 and
press the channel button (22) on the remote control to
select "TINT".

3.

Connect the oscilloscope to TP023.

4.

Press the VOL. UP/DOWN button on the remote control
until the section "A" becomes as straight line.

(Refer to Fig. 2-1)

5.

Press the channel button (19) on the remote control to
select "COL. CENT".

6.

Connect the oscilloscope to TP022.

7.

Adjust the VOLTS RANGE VARIABLE knob of the
oscilloscope until the range between white 100% and
0% is set to 5 scales on the screen of the oscilloscope.

8.

Press the VOL. UP/DOWN button on the remote control
until the red color level is adjusted to 110% of the white
level. (Refer to Fig. 2-2)

9.

Receive the color bar pattern. (Audio Video Input)

10.

Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
2~8.

"A"

Fig. 2-1

2-9: OSD HORIZONTAL (RF)

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. 2-3)

TV

00 OSD 15

BA

2-10: BRIGHTNESS MANUAL (RF, AV)

Activate the adjustment mode display of Fig. 1-1 and

1.
press the channel button (13) on the remote control to
select "BRI.CENT".
Press the VOL. UP/DOWN button on the remote control

2.
until the brightness step No. becomes "120".
Receive a broadcast and check if the picture is normal.

3.
Press the TV/VIDEO button on the remote to set to the

4.
AV mode. Then perform the above adjustment 2~3.

Fig. 2-3

white 100%

2-12: SUB CONTRAST (RF, AV)

Activate the adjustment mode display of Fig. 1-1 and

1.
press the channel button (17) on the remote control to
select "CONT.MAX".
Press the VOL. UP/DOWN button on the remote control

2.
until the contrast step No. becomes "44".
Receive a broadcast and check if the picture is normal.

3.
Press the TV/VIDEO button on the remote to set to the

4.
AV mode. Then perform the above adjustment 2~3.

red 100%

Fig. 2-2

D-2