Panasonic CT-32SX31E Manuel utilisateur

Panasonic

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

Service Manual

Color Television

(NA8ML)

Main Manual

and distribution is a violation of law.

“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.”

CT-32SX31E BP371

CT-32SX31UE BP371

CT-32SX31CE BP371

CT-36SX31E BP372

CT-36SX31UE BP372

CT-36SX31CE BP372

ORDER NO. MTNC010524C1

Chassis

Models

This Service manual is issued as a service guide for the models of the NA8ML family listed above. Included in this

manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly

procedures and a complete parts list.

- 12 -

Chassis Service Adjustment Procedures

All service adjustments are factory preset and should not require adjustment unless controls and/or

associated components are replaced.

Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use heat sink when the HOT ground symbol

( ) is used. Otherwise, use COLD ground ( ) — Tuner shield.

MOMENTARILY CONNECT A JUMPER FOR ENTERING SERVICE MODE (TP8 to COLD GND)

140.0V B+ Voltage Confirmation

1. Set the Bright and the Picture to Minimum by

using the Picture Menu.

2. Connect the DVM between TPP17 (+ side) and cold

ground ( ).

3. Confirm that B+ voltage is 140.0V ± 1.5V. This

voltage supplies B+ to the Horizontal Output &

Flyback circuits.

Source Voltage Chart

120V AC line input. Set the Bright and the Picture to

Minimum by using the Picture Menu. Use cold ground

(

) for the (-) lead of the DVM.

.Adjust Picture Menu for normalized video adjustments.

High Voltage Check

1. Select an active TV channel and confirm that

horizontal is in sync.

2. Adjust Brightness and Picture using Picture Icon

menu so video just disappears.

3. Confirm B+ 140.0V is within limit.

4. Using a high voltage meter confirm that the High

Voltage is 31.0kV ± 1.0kV.

TP 18

A/V REAR INPUTS

IC101

D-BOARD

A-BOARD

IC002 IC882

IC2301

D825

D751

T801

L826

Q551

Q801

L824

D827

Q804

C840

D511

IC1801

IC001 IC881

IC3001

IC883

L008

Q002

C3023

LOCATION (D-Board) VOLTAGE

TPP17

(by D825)

+B2 140.0V ± 1.5V

TPP25

(by D827)

9V 9.0V ± 1.5V

TPP19

(by Q804)

15V 15.0V ± 2.0V

TPP20

(by C840)

15V (VER.) 15.0V ± 1.5V

TPP21

(by L826)

-15V (VER.) -15.0V ± 1.5V

TPP22 (

by L824

) SOUND 32.5V ± 2.0V

TPD7

(by D511)

220V 220.0V ± 9.0V

LOCATION (A-Board) VOLTAGE

TPA6

(by IC883)

MAIN 12V 12.0V ± 0.5V

TPA7

(by IC3001)

MAIN 9V 9.0V ± 0.5V

TPA8

(by L008)

MAIN 5V 5.0V ± 0.3V

TPA16

(by Q002)

STBY 3.3V 3.3V ± 0.2V

TPA18

(by C3023)

BTL 30V 32.0V ± 2.0V

LOCATION (D-Board) VOLTAGE

- 17 -

Serviceman Mode (Electronic Controls)

This Receiver has electronic technology using the I²C Bus Concept. It performs as a control function and it

replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control

functions are now performed by using “On Screen Display Menu”. (The Serviceman Adjustment Mode.)

Note: It is suggested that the technician reads all the way through and understand the following procedure for

Entering/Exiting the Serviceman Adjustment Mode; then proceed with the instructions working with the

Receiver. When becoming familiar with the procedure, the Flow Chart for Serviceman Mode may be used

as a quick guide.

Quick Entry to Serviceman Mode:

At times when minor adjustments need to be done to the electronic controls, the method of Entering the

serviceman Mode without removal of the cabinet back is as follows using the Remote Control:

1. Select SET-UP icon and select CABLE mode.

2. Select TIMER icon and set SLEEP time for 30 Min.

3. Press ACTION button 3 times to exit menus.

4. Tune to the Channel 124.

5. Adjust VOLUME to minimum (0).

6. Press the VOL button (decrease) on Receiver. Red “CHK” appears in upper corner.

7. Press the Power Button on the Remote Control to select one of the Serviceman Adjustment Modes.

1) B= Serviceman VCJ SUB-DATA ADJUSTEMENT.

2) C= Serviceman VCJ CUT-OFF ADJUSTMENT.

3) D= Serviceman GEOMETRY ADJUSTMENT.

4) M= Serviceman MTS ADJUSTMENTS.

5) P= Serviceman PIP ADJUSTMENT.

6) S= Serviceman S OPTION ADJUSTMENTS.

7) X= Serviceman X OPTION ADJUSTMENT.

8) E= Serviceman E OPTION ADJUSTMENTS

9) “CHK” = Normal operation of CHANNEL and VOLUME .

Exiting the Serviceman Mode:

Press the Action and the Power buttons on the Receiver simultaneously for at least 2 seconds.

THE RECEIVER EXITS SERVICEMAN MODE.

The Receiver momentarily shuts off; then comes back on tuned to channel 3 with a preset level of sound.

Any programmed channels, channels caption data and some others user defined settings will be erased.

To toggle between Aging and Serviceman modes:

While the “CHK” is displayed on the left top corner of the CRT, pressing the Action and the Volume Up buttons

on the Receiver simultaneously will toggle between the modes. Red “CHK” for Serviceman and yellow “CHK” for

Aging.

An address Menu appears in the right

hand corner of the screen

32 B 0 2 215 C 0

baba

Note: Only the applicable settings for

the Receiver serviced will be

available (See

in Fig. 20).

Figure 20. Serviceman Mode Menu Adjustments.

IMPORTANT NOTE:

Always Exit the Serviceman Mode

Following Adjustments.

- 18 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment .

For Adjustments:

Sub-Data Adjustment Default

Level

B00 SUB-COLOR 31

B01 SUB-TINT 40

B02 SUB-BRIGHTNESS 40

B03 SUB-CONTRAST 16

B04 SUB-TINT VIDEO 16

B05 SUB-COLOR VIDEO 22

B06 SUB-TINT COMP 63

B07 SUB-COLOR COMP 28

B08 SUB SHARP TV/VIDEO 10

B09 SUB SHARP S-VHS/COMP 17

B0A SUB-CONTRAST FIXED 15

Cut-Off Adjustment Default

Level

C00 CUT-OFF R 128

C01 CUT-OFF G 128

C02 CUT-OFF B 128

C03 BRIGHTNESS 31

C04 G DRIVE 64

C05 B DRIVE 64

C06 DRIVE C TEMP 8

C07 CONT C TEMP 5

C08 CUTOFF R COMP 112

C09 CUTOFF G COMP 114

C0A CUTOFF B COMP 103

1.Press Channel Up/Down on the

Remote Control to select one of

the available Service Adjustments

(a in Fig. 20).

Note: Write Down the original

value set (bin

Fig. 20

) for

each address before

modifying anything. It is

easy to erroneously adjust

the wrong item.

2.Press Volume Up/Down on the

Remote Control to adjust the

level of the selected Service

Adjustment (bin Fig. 20).

To D Items.

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

- 19 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For Adjustments:

Geometry Adjustments Default

Level

D00 H POSITION 13

D01 V SIZE 37

D02 V S CORRECTION 5

D03 V LIN CORRECTION 8

D04 E/W TRAPEZIUM 9

D05 V AGC 1

D06 V POSITION 1

D07 V CENTERING 65

D08 V CENTERING DAC SW 0

D09 V-BLK START 12

D0A V-BLK STOP 14

D0B EW CORNER 6

D0C EW PARABOLA 11

D0D H WIDTH 20

D0E OSD POSITION 90

MTS Adjustment Default

Level

M00 INPUT LEVEL 33

M01 LOW-LEVEL SEPARATION 6

M02 HIGH-LEVEL SEPARATION 25

1.Press Channel Up/Down on the

Remote Control to select one of

the available Service Adjustments

(a in Fig. 20).

Note: Write Down the original

value set (bin

Fig. 20

) for

each address before

modifying anything. It is

easy to erroneously adjust

the wrong item.

2.Press Volume Up/Down on the

Remote Control to adjust the

level of the selected Service

Adjustment (bin Fig. 20).

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

Note: Some adjustment modes may not be

available in some formats.

To P Items.

- 20 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For Adjustments:

PIP Adjustment Default

Level

P00 PIP COLOR 53

P01 PIP TINT 64

P02 PIP BRIGHTNESS 11

P03 PIP CONTRAST 58

P04 PIP POS V_TOP 26

P05 PIP POS V_BOTTOM 143

P06 PIP POS H_LEFT 10

P07 PIP POS H_RIGHT 101

P08 PIP POS 26

P09 PIP POS 160

P0A PIP POS 10

P0B PIP POS 116

P0C N/A N/A

P0D PIP YDELAY 4

1.Press Channel Up/Down on the

Remote Control to select one of

the available Service Adjustments

(a in Fig. 20).

Note: Write Down the original

value set (bin

Fig. 20

) for

each address before

modifying anything. It is

easy to erroneously adjust

the wrong item.

2.Press Volume Up/Down on th

Remote Control to adjust th

level of the selected Servic

Adjustment (bin Fig. 20).

To S Items.

Note: Some adjustment modes may not be

available in some formats.

- 21 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For

Adjustments:

1.Press Channel Up/Down on the

Remote Control to select one of

the available Service Adjustments

(a in Fig. 20).

Note: Write Down the original

value set (bin

Fig. 20

) for

each address before

modifying anything. It is

easy to erroneously adjust

the wrong item.

2.Press Volume Up/Down on th

Remote Control to adjust th

level of the selected Servic

Adjustment (bin Fig. 20).

OPTIONS Adjustment Default

Level

S00 ABL GAIN 3

S01 ABL POINT 3

S02 RGB BRIGHTNESS 3

S03 RGB GAMMA 1

S04 GAMMA 1

S05 VSM-G 0

S06 BS POINT 3

S07 CLOCK ADJUST 128

S08 CAP DIGITAL FIL 0

S09 CAP SCROLL 1

S0A RGB MATRIX 6

S0B RGB MATRIX YUV 5

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

To X Items.

- 22 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For Adjustments:

X Option Adjustment Default

Level

X00 V ENHANCER 3

X01 V ENH NL 1

X02 H PEAKING GAIN 2

X03 V CORING 1

X04 C TRAP GAIN 0

X05 GEO MAG CEN 179

X06 GEO MAG GAIN 10

X07 H LOCK 1

X08 H LOCK L 70

X09 H SEPA 1L 313

X0A H SEPA 2L 266

X0B H LOCK W 0

X0C H LOCK L 70

X0D H SEPA 1WL 313

X0E H SEPA 2WL 266

E Option Adjustment Default

Level

E00 SURROUND EFFECT 3

E01 BBE LOW 4

E02 BBE HIGH 6

1.Press Channel Up/Down on the

Remote Control to select one of

the available Service Adjustments

(a in Fig. 20).

Note: Write Down the original

value set (bin

Fig. 20

) for

each address before

modifying anything. It is

easy to erroneously adjust

the wrong item.

2.Press Volume Up/Down on the

Remote Control to adjust the

level of the selected Service

Adjustment (bin Fig. 20).

To B Items.

- 23 -

To Check Purity:

Press the Recall Button on the Remote Control when in Serviceman Mode (red “CHK” is displayed) to enter the

Purity Field Check Mode.

Press Recall again to select desired field.

NORMAL

SCREEN

WHITE

SCREEN

RED

SCREEN

GREEN

SCREEN

BLUE

SCREEN

Figure 21. Purity Check Field Mode.

Helpful Hints

Entering Serviceman Mode (Back-Open Method)

1. While the Receiver is ON or Puggled and operating in Normal Mode,

momentarily short test point FA1 (TP8) to Cold Ground ( ) FA2

(TP3) A-Board.

The Receiver enters the Aging Mode

Yellow letters “CHK” appear in the upper left corner of the CRT.

(The Volume Up/Down will adjust rapidly).

2. Simultaneously press the Action and the Volume Up buttons on the

Receiver Control Panel.

The Receiver enters the Serviceman Mode.

The letter in “CHK” turn red.

(The Volume Up/Down will adjust normally).

(All customer controls are set to nominal level).

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

- 24 -

Instructional Flow Chart for Serviceman Mode

Adj.

needed?

NORMAL MODE

Momentarily shortFA1 toFA2 .

Press Action + Volume Up Simultaneously (ON Receiver)

Adj.

needed?

WHITE

SCREEN

(ON REMOTE)

RECALL

WHITE

SCREEN

RED

SCREEN

GREEN

SCREEN BLUE

SCREEN

POWER

(ON REMOTE)

AGING MODE

• Yellow “CHK” appears in upper left corner of screen.

• Volume Up/Down operate rapidly.

• Customer Controls are set to nominal level.

SERVICEMAN MODE

• “CHK” turns red.

• Volume Up/Down operate normally.

• Customer Controls are set to nominal level.

SUB-DATA ADJUSTMENTS.

B ITEMS.

QUICK ENTRY TO SERVICEMAN MODE

• Select CABLE Mode.

•SetSLEEP time for 30 Min.

• Tune to Channel 124.

• Adjust Volume to minimum.

• Press VOL DOWN On Receiver.

EXIT

Figure 22. Flow Chart for Serviceman Mode.

(ON REMOTE)

RECALL

Press Action and Power on the Receiver

simultaneously for at least 2 seconds.

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

THE LEVEL

VOL VOL

POWER

(ON REMOTE)

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

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