Toshiba 32HFX72 SET-UP Adjustment for Flat Tube, Color Purity Adustment, Convergence Adjustments

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INFORMATIONS GENERAL ADJUSTMENTS

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION”, “SAFETY PRECAU- TION” AND “PRODUCT SAFETY NOTICE” ON PAGE 3 OF SERVICE MANUAL.

(SET-UP ADJUSTMENT FOR FLAT TUBE)

The following adjustments should be made when a complete realignment is required or a new picture tube is installed. Perform the adjustments in order as follows :

1.Color Purity

2.Convergence

3.White Balance

Note: The PURITY/CONVERGENCE MAGNET assembly and rubber wedges need mechanical positioning. Refer to figure 1.

COLOR PURITY ADUSTMENT

(1)Let the screen face in the installing direction or toward the east (when it is to be moved), bring up the service mode screen after demagnetizing (front, left, right, and top) with the degaussing coil, receive white signals by pressing the [TV/VIDEO] button, and then the receiver should be operated for more than 40 minutes.

(2)Perform rough adjustment of the central convergence with the P/C magnet according to the adjustment item.

(3)Receive built-in green signals, loosen set screws on the deflection yoke, remove rubber wedges, and shift the deflection yoke to toward front.

(4)Move alternately the two 2-pole magnets of the P/C magnets so that the green raster can come to the center of the screen.

SPECIFIC

2-pole purity magnet (27": Magnet is fixed with deflection yoke.)

Figure 1.

Main 4-pole convergence magnet (30" : 32")

6-pole convergence magnet (34")

6-pole convergence magnet (30" : 32") Main 4-pole convergence magnet (34")

Green Belt

A

P/C magnet installing position A

• 30"=26.5 mm

• 32"=30.5 mm or 32.5 mm

• 34"=37 mm

• 34"=39 mm

Sub-4-pole convergence magnet (32" : 34")

Sub-4-pole convergence magnet (to be installed on deflection yoke for 30", 32”)

(5)Receive built-in red and blue signals, check that there is no inclination of the single color raster toward one side, and if each color tilts to a great extent, make adjustment with the 2-pole magnet so that the 3 colors will come to the center

evenly.

Shift deflection yoke

(6)Receive the green raster, shift the deflection yoke from a

(6)

 

 

(7) Perform marking of each point

foremost position (hitting against the picture tube) to a

 

 

(8)

 

 

 

on the tape of picture tube

 

 

 

 

backward position horizontally, stop the deflection yoke

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

at a position where it begins to become a green raster,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and perform accurate marking on the picture tube.

Picture tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CRT-D board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(7)Shift the deflection yoke further backward, and perform

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

accurate marking at a position where the green raster

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

begins to being luck.

 

 

 

 

 

 

 

 

 

 

 

 

P/C Mag

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(8)Fix the deflection yoke at a position 60% forward within

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

100 60 0%

 

 

 

 

 

 

the range marked in items (6) and (7) above.

 

 

 

 

 

 

Fix the deflection yoke at a position 60% forward from a

 

CONVERGENCE ADJUSTMENTS

point between (6) and (7)

*Adjust the convergence magnet to get vest convergence in the the order to (1) ~ (5).

CENTER CONVERGENCE:

(1)Receive the white crosshatch or dot pattern from the service signal generator.

(2)Use the 2 pieces of main 4-pole magnets of P/C magnets, change the open angle, and align the red and blue vertical lines on the screen center.

(3)Freeze the open angle of the main 4-pole magnets, turn them simultaneously, and align the horizontal lines.

(4)Take the same steps for items (2) and (3) above and align red/blue with green on the screen center using two 6-pole magnets.

– 6 –

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Contents 32HF72, 32HFX72 Toshiba Corporation 36HFX72, 36HF72 Table of Contents General Adjustments Safety Instructions RAY Radiation PrecautionSafety Precaution Product Safety NoticeSET-UP Adjustment Color Purity AdjustmentDeflection Yoke PURITY/ Conv Magnet Rubber WedgesConvergence Adjustments Center Convergence Adjustment BLU RED RED/BLUE GRNGRN SCREEN-CORNER ConvergenceSET-UP Adjustment for Flat Tube Convergence AdjustmentsColor Purity Adustment Center ConvergenceCircumference Convergence InformationsService Mode Entering to Service ModeDisplaying the Adjustment Menu KEY Function in the Service ModeSelecting the Adjusting Items Adjusting the DataExit from Service Mode Test Signal SelectionSelf Diagnostic Function Self CheckBUS Line OK BUS Cont OK SyncElectrical Adjustments Adjustment ProcedureParabola DPC ParaHorizontal Position HposCircuit Checks High Voltage CheckFS Circuit Check YESSpecific Informations Setting & Adjusting Data Safety InstructionsService Mode Adjusting Items and Datas in the Service Mode Option Progressive 43 DVLocation of Controls Representatives 36HFX72 Remote Control Programming Channel Memory TV/CABLE functionChassis and Cabinet Replacement Parts List OMFELECTROLYTIC, 16V 22UF M 3A ELECTROLYTIC, 160V 330UF M 3D Plastic FILM, 50V 0.01MF J Resistors CHIP, Metal FILM, 1/20W 7.5K OHM J Carbon FILM, 1/6W 75 OHM J Carbon FILM, 1/6W 820 OHM J Carbon FILM, 1/6W 1M OHM J 36HFX72 Coils & Transformers Semiconductors IC, PQ30RV1 DIODE, EU2A Miscellaneous Picture Tube Signal Board PD0650 Bottom Foil SidePOWER/DEF Board PD0159 CRT-D/VM Board PD0164 AC in Board PD0161 LOW B Board PB9567CONTROL-1 Board PD0651 CONTROL-2 Board PD0652 WOW Board PD0645 Terminal View of Transistors Schematic Diagram Structure Diagram SignalunitPower Source Power ConsumptionAudio Power DimensionsToshiba Corporation Schematic Diagram Diagram Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page