Panasonic CT-32HC14J /UJ Schematic

Service Manual

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MTNC040314C1

B19 Canada:B05

Color Television

CT-32HC14J CT-32HC14UJ

DX4M

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8 Auto diagnosis feature

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This receiver incorporates a new self diagnosis feature. With this new feature will be easier for the technician to detect the failures. There is a LED located by the keyboard on the front panel, this LED will start flashing when a failure is detectedby the circuits located in specific areas, depending on how many times the LED is flashing, this will tell you what circuit should be checked. Make a count of flashing and see the table shown below. Please use this feature effectively especially forintermittent problems.

SOS of front LED

FLASHES POSSIBLE CIRCUIT SOS

1 POWER+140 SOS 1 2 LOW B+ D.C. SOS 2 4 HI VOLTAGE HHS HHS 5 IC4511 GC2M 6 IC4518 GC2S 8 AUDIO AMP SOS 4

AFTER THE COUNT

Proceed to check that area, verify what board is the problem located, this way the area to check will be reduced until the failure is found.

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9 EEPROM copy jig

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This CTV has a feature that allows to clone or back-up main EEPROM data adjustments from a CTV to other by connecting a jig to the CTV set. A jig part number TXFJIG01SER, is available through Matsushita/Panasonic Services.

Preparation:

To connect this jig, remove the lower back cover as instructed on disassembly for service section on this service manual and insert the jig into A15 connector located on the A-Board. (See figure)

EEPROM copy jig connection

Procedure to copy data:

1.Enter to service mode and display service menu.

2.Select “AREA” DAC and then press ACTION button on remote to enter. Press VOL right/left to select one of the following options then press ACTION:

¡ Select ALL to copy all main EEPROM data

Select ADJ to copy only adjustment data.

Select FIX to copy only fix data

3.To copy data from main EEPROM to jig, select “IN→EX” DAC and press ACTION button on remote.

4.To copy data from jig to main EEPROM, select “EX→IN” DAC and press ACTION button on remote.

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12 Chassis service adjustment procedures

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All service adjustments are factory preset and should not require adjustment unless controls and/or associated components are replaced.

140.0_V B+ voltage check

1.Set the BRIGHT and PICTURE to minimum by using the PICTURE menu.

2.Connect the DVM on TPD144 (D-Board by D2 connector) and cold ground

3.Confirm that B+ voltage is 144.0V ± 1.5V. This voltage supplies B+ to the horizontal output and flyback circuits.

Source voltage chart

120V AC line input. Set the BRIGHT and the PICTURE to minimum by using the PICTURE menu. Use cold or hot ground for the (-) lead of the DVM as needed

A-BOARD VOLTAGE

STBY 7V (BY IC804) A-Board TPP9 7.5 ± 0.6V MAIN 9V (BY IC875) A-Board TPA7 9.0V ± 0.5V MAIN 5V (BY IC871) A-Board TPA8 5.0V ± 0.3V

GC 2.5V (BY IC872) A-Board TPA9 2.5V ± 0.2

STBY 3.3V (BY A1 CONNECTOR) A-Board TPA16 3.3V ± 0.2V

D-BOARD VOLTAGE

+B2 (BY D2 CONNECTOR) D-Board TPD144 144.0 ± 1.5V

25V (BY D40 CONNECTOR) D-Board TPD250 27.5 ± 2.0V

15V (BY D4 CONNECTOR) D-Board TPD150 15.7 ± 1.5V

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-15V (BY RL451) D-Board TPD151 -16.0V ± 1.5V

SOUND+ (BY D4 CONNECTOR) D-Board TPD160 16.5V ± 1.0V

SOUND- (BY D4) D-Board TPD161 -16.5V ± 1.0V

220V (BY D2 CONNECTOR) D-Board TPD7 210V ± 5.0V

12V (BY IC433) D-Board TPA6 12V ± 0.5V

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+ 144 ± 1.5V is within limit.

4.Using a high voltage meter confirm that the high voltage is 33.0kV ± 1.0kV

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14 Service mode (electronic adjustments)

NOTE

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This receiver has electronic technology using the IC 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 byusing “on screen display menu”. (The service adjustment mode).

It is suggested that the technician reads all the way through and understand the following procedure for entering/exiting the service adjustment mode; then proceed with the instructions working with the receiver. When becoming familiarwith the procedure, the flow chart for service mode may be used as a quick guide.

Quick entry to service mode

When minor adjustments need to be done to the electronic controls, the method of entering the service 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.Exit menus.

4.Tune to the channel 124.

5.Adjust VOLUME to minimum (0).

6.Press VOL → (decrease) on receiver. Red “CHK” appears in upper corner.

NOTE

After receiver is set into service mode, set TIMER back to NO.

To toggle between aging and service modes:

While the “CHK” is displayed on the left top corner of the CRT, pressing “ACTION” and “VOL” UP on the TV simultaneously will toggle between the modes. Red “CHK” for serviceand yellow “CHK” for aging.

7.Press POWER on the remote control to display the service adjustment modes menu, select adjustment by pressing the volume right/left buttons and channel up/down buttons on the remote and ACTION to enter the adjustment.

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NOTE

Some adjustments are available only in some modes (480i, 480p, 1080i); it is needed to apply the format. A 1080i, 480p, 480i pattern can be obtained from Panasonic’s TU-DST51 set-top box DTV decoder.

Exiting the service mode:

This TV goes out from service mode when it is unplugged or turned OFF. To exit the service mode, turn the TV OFF or unplug the TV from A.C.

Other method

Press ACTION and POWER on the receiver simultaneously for at least 2 seconds.

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 when exited by pressing ACTION and POWER on receiver.

IMPORTANT NOTE

Always check that the TV exits the service mode.

To confirm colors

When in service mode (red “CHK” is displayed) press RECALL on the remote control to enter the purity field check mode

Entering service mode (open-back method)

While the receiver is connected and operating in normal mode, momentarily short test point

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FA1 (A15 pin 2) to cold ground (A-Board).

The receiver enters the aging mode.

Yellow letters “CHK” appear in the upper left corner of the screen. (The volume right/left and channel up/down will adjust rapidly).

14.1 Service adjustment default values for service items

14.2 Instructional flow chart for service mode

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14.1 Service adjustment default values for service items

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MTSIN INPUT LEVEL 1A SEPAL LOW LEVEL SEPARATION 6

SEPAH HIGH LEVEL SEPARATION 20 CLOCK CLOCK 128 COLOR COLOR 2F 17

TINT TINT 76 81

BRIGH SUB-BRIGHTNESS 3B 42

CONT SUB-CONTRAST 23 65 B-Y_G MAGENTA TINT ADJ 2E 3E CUT G GREEN CUT-OFF 01 65 CUT R RED CUT-OFF 01 85 CUT B BLUE CUT-OFF 01 A6

BRT BGRIGHT

DESCRIPTION FORMAT

NTSC 480p (16:9) 1080i (16:9) 1080i (4:3)

R DR RED DRIVE A0 B DR BLUE DRIVE A0 HLIN HORIZONTAL LINEARITY 79 7F

HPOS HORIZONTAL POSITIONING 01 7A

HWID HORIZONTAL WIDTH 54 2F

PCC PINCUSHION CORRECTION 50 2A 31 3E

PCCHG PINCUSHION HIGH 6 0A 9 7

PCCLG PINCUSHION LOW 2 7 5 9 PCCHS PINCUSHION HIGH 4 3 3 3 PCCLS PINCUSHION LOW 3 3 3 3

TOPG TOP CORNER PINCUSHION 5B 55 4C 5B

BTMG BOTTOM CORNER PINCUSHION 45 32 49 4A

TOPSL TOP CORNER PINCUSHION SLICE LEVEL 2 8 6 7

BTMSL BOTTOM CORNER PINCUSHION SLICE LEVEL 2 8 5 7

TRAP TRAPEZOID 83 7E 7F 7D

01 82

PARA PARALLELOGRAM 3 4 4 8

SIDE E-W PINCUSHION ADJUSTMENT 4 6 7 8

HTRAP HORIZONTAL TRAPEZOID 1A 1A 1A 14

VRAS VERTICAL POSITION 8C 71 7B 79

VEAMP VERTICAL SIZE A8 E2 99 9A

V-C VERTICAL LINEARITY 21 26 25 24

V-S VERTICAL S CORRECTION 30 25 17 33

HDAFS HORIZONTAL DAF PHASE 59 01 C5 A0

VDAFG VERTICAL DAF GAIN A0 63 60 0 VMM_G ---------------- F0 F0 VMM_P ---------------- F3 F3

HHS ---------------- CB

EW_SW ---------------- 0 0 0

VTOP ---------------- 9C 7E 79 9B

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NOTE:

SOSSW ---------------- 1 1

The above table shows the default values for the service items, this values can change depending on the serviced TV.

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14.2 Instructional flow chart for service mode

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TNR001

A/V 1

A/V 2

AUDIO IN

C2211

MPX IN

IC2201

MTS

L OUT

R OUT

C3128

C3126

R3128

R3126

C3116

R3116

R3101

LV5

RV5

LV1

LV4

C3117

R3118

RV4

IC3001

A/V SWITCH

RV1

R3107

R3103

C3110

R3110

LV2

LV3

RV2

RV3

L OUT 1

R OUT 1

R3108

C3112

R3112

C3184

C3185

R3184

R3185

C3163

R3165

R3172

A-BOARD

C3108

C3101

C3107

C3103

LV3 RV 3

A/V 3

G-BOARD

A/V 4

AUDIO BLOCK DIAGRAM 1/3 CT-32HC14J/UJ

C3172

DV-BOARD

YUV 1

YUV 2

R3184

R3185

C3163

R3165

L3 R3 L6

C3165

R3166

IC3002

R3172

A/V SWITCH

R3173

C3191

R3191

R OUT 1

L OUT 1

C3193

R3192

R3177

R3178

VAO L

C2470

C2451

INB

IC2451

SOUND

PROCESSOR

INA

R2324

OUT B

OUT A

R2451

R2452

R2325C2330

C3172

-BOARD

C3174

R2348

VAO

VAO R

R2342

C2332

JACKS

AUDIO BLOCK DIAGRAM 2/3 CT-32HC14J/UJ

AUDIO MUTE

FROM MPU

R2451

R2452

Q2452

Q2451

R2325

R2348

AUDIO

MUTE

CIRCUIT

R2338

IC2304

VAO AMP

R2334

R2333

R2335

C2371

IN R

MUTE

IC2302

AUDIO OUT

C2375

IN L

AMP

H-BOARD

VAO MUTE FROM MPU

AUDIO MUTE FROM MPU

OUT R

OUT L

L2331

L2332

AUDIO BLOCK DIAGRAM 3/3 CT-32HC14J/UJ

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