Panasonic CT-32D20B Schematic

SAFETY PRECASAFETY PRECA

SAFETY PRECA

SAFETY PRECASAFETY PRECA

SERSER

VICE VICE

SER

SERSER

Only qualified service technicians who are familiar with safety checks
and guidelines should perform service work. Before replacing parts,
disconnect power source to protect electrostatically sensitive parts. Do
not attempt to modify any circuit unless so recommended by the
manufacturer. When servicing the receiver, use an isolation transformer
between the line cord and power receptacle.

SERSER

SER

SERSER

Use EXTREME CAUTION when servicing the high voltage circuits. To
discharge static high voltage, connect a 10K ohms resistor in series with a
test lead between the receiver ground and CRT anode lead. DO NOT lift
the CRT by the neck. Always wear shatterproof goggles when handling
the CRT to protect eyes in case of implosion.

X-RAX-RA

X-RA

X-RAX-RA

Be aware of the instructions and procedures covering X-ray radiation. In
solid-state receivers and monitors, the CRT is the only potential source of
X-rays. Keep an accurate high voltage meter available at all times. Check
meter calibration periodically. Whenever servicing a receiver, check the
high voltage at various brightness levels to be sure it is regulating
properly. Keep high voltage at rated value, NO HIGHER. Excessive high
voltage may cause X-ray radiation or failure of associated components.
DO NOT depend on protection circuits to keep voltage at rated value.
When troubleshooting a receiver with excessive high voltage, avoid close
contact with the CRT. DO NOT operate the receiver longer than
necessary. To locate the cause of excessive high voltage, use a variable
AC transformer to regulate voltage. In present receivers, many electrical
and mechanical components have safety related characteristics which are
not detectable by visual inspection. Such components are identified by a

##

# on both the schematic and the parts list. For SAFETY, use only

##

equivalent replacement parts when replacing these components.

GENERAL GUIDELINESGENERAL GUIDELINES

GENERAL GUIDELINES

GENERAL GUIDELINESGENERAL GUIDELINES

Perform a final SAFETY CHECK before returning receiver to customer.
Check repaired area for poorly soldered connections, and check entire
circuit board for solder splashes. Check board wiring for pinched wires or
wires contacting any high wattage resistors. Check that all control knobs,
shields, covers, grounds, and mounting hardware have been replaced. Be
sure to replace all insulators and restore proper lead dress.

WARNINGWARNING

VICE

WARNING

VICE VICE

WARNINGWARNING

VICING VICING

VICING

VICING VICING

Y RADIAY RADIA

Y RADIA

Y RADIAY RADIA

THE HIGH THE HIGH

THE HIGH

THE HIGH THE HIGH

TION AND HIGH TION AND HIGH

TION AND HIGH

TION AND HIGH TION AND HIGH

VV

OLOL

V

OL

VV

OLOL

TT

AA

GE AND CRGE AND CR

T

A

GE AND CR

TT

AA

GE AND CRGE AND CR

VV

OLOL

TT

V

OL

T

VV

OLOL

TT

TT

T

TT

AA

GE LIMITSGE LIMITS

A

GE LIMITS

AA

GE LIMITSGE LIMITS

UTIONSUTIONS

UTIONS

UTIONSUTIONS

SAFETY CHECKS — FIRE AND SHOCK HAZARDSAFETY CHECKS — FIRE AND SHOCK HAZARD

SAFETY CHECKS — FIRE AND SHOCK HAZARD

SAFETY CHECKS — FIRE AND SHOCK HAZARDSAFETY CHECKS — FIRE AND SHOCK HAZARD

Cold LeakaCold Leaka

Cold Leaka

Cold LeakaCold Leaka

Unplug the AC cord, connect a jumper across the plug prongs, and turn
the power switch on (if applicable). Use an ohmmeter to measure the
resistance between the jumped AC plug and any exposed metal cabinet
parts such as antenna screw heads, control shafts, or handle brackets.
Exposed metal parts with a return path should measure between 1M
ohms and 5.2M ohms. Parts without a return path must measure infinity.

Hot LeakaHot Leaka

Hot Leaka

Hot LeakaHot Leaka

Plug the AC cord directly into an AC outlet. DO NOT use an isolation
transformer. Use a 1500 ohms, 10W resistor in parallel with a .15µF
capacitor to connect between any exposed metal parts on the receiver and
a good earth ground. (See figure below.) Use an AC voltmeter with at
least 5000 ohms per volt sensitivity to measure the voltage across the
resistor. Check all exposed metal parts and measure voltage at each point.
Voltage measurements should not exceed .75VAC, 500µA. Any value
exceeding this limit constitutes a potential shock hazard and must be
corrected. If the AC plug is not polarized, reverse the AC plug and repeat
exposed metal part voltage measurement at each point.

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e Current Chece Current Chec

or Receiveror Receiver

or Receiver

or Receiveror Receiver

kk

k

kk

s with Isolated Grs with Isolated Gr

s with Isolated Gr

s with Isolated Grs with Isolated Gr

oundound

ound

oundound

4554

INDEXINDEX

INDEX

SET 4554SET 4554

SET 4554SET 4554

SET 4554

Horizontal Oscillator Disable Test......... 1

IC Functions ........................................... 1

Important Parts Information ................... 1

Miscellaneous Adjustments .................... 1

Parts List ................................................. 4

Placement Chart ..................................... 1

Safety Precautions .................................. 1

Schematic Component Location ............ 2

Schematic Notes ..................................... 1

Schematics

Audio ............................................... 3

PIP ................................................... 4

Power Supply .................................. 2

System Control ................................ 2

Television ........................................ 2

Video ............................................... 3

Test Equipment....................................... 1

Tuner Information .................................. 1

-32D20B (CHASSIS AP341)-32D20B (CHASSIS AP341)

-32D20B (CHASSIS AP341)-32D20B (CHASSIS AP341)

-32D20B (CHASSIS AP341)

INDEXINDEX

Technical Service Data

PP

ANASONICANASONIC

P

ANASONIC

PP

ANASONICANASONIC

Model CTModel CT

Model CT

Model CTModel CT

ff

or seror ser

f

or ser

ff

or seror ser

-32D20B (Chassis AP341)-32D20B (Chassis AP341)

-32D20B (Chassis AP341)

-32D20B (Chassis AP341)-32D20B (Chassis AP341)

Representative Model

Essential coEssential co

Essential co

Essential coEssential co

vicing a televicing a tele

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hematicshematics

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hematics

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veravera

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vision receivervision receiver

vision receiver

vision receivervision receiver

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......

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4554

4554

HORIZONTHORIZONT

HORIZONT

HORIZONTHORIZONT

Place a jumper between pins 3 and 4 of IC803. Apply 9.0V to the cathode of D001. Connect a
high voltage probe to the CRT anode. Set the AC supply to 45VAC. Turn the receiver on and
slowly increase the AC supply. Confirm the high voltage does not exceed 37.1kV when the
horizontal just begins to pull out of sync. If the high voltage should exceed 37.1kV or the
receiver fails to lose horizontal sync, the horizontal oscillator disable circuit should be repaired.
Remove jumper and the 9.0V DC supply.

The listing of any available replacement part herein in no case constitutes a recommendation, warranty, or guarantee by
SAMS Technical Publishing as to the quality and suitability of such replacement part. The numbers of the listed parts have
been compiled from information furnished to SAMS Technical Publishing by the manufacturers of the specific type of
replacement part listed.

Reproduction or use, without express permission, of editorial or pictorial content, in any manner, is prohibited. No patent
liability is assumed with respect to the use of the information contained herein.

© 2002

5436 West 78th Street
Indianapolis, IN 46268-4149

Printed in the United States of America 5 4 3 2 1

PP

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a

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SET 4554 SET 4554

SET 4554

SET 4554 SET 4554

P

PP

AL OSCILLAAL OSCILLA

AL OSCILLA

AL OSCILLAAL OSCILLA

TT

OR DISABLE OR DISABLE

T

OR DISABLE

TT

OR DISABLE OR DISABLE

02PF01922

TESTTEST

TEST

TESTTEST

UPC

HERE

MODEL CTMODEL CT

MODEL CTMODEL CT

MODEL CT

ANASONICANASONIC

ANASONICANASONIC

ANASONIC
PP

PP

P

For Supplier AdFor Supplier Ad

For Supplier Ad

For Supplier AdFor Supplier Ad

See PHOSee PHO

See PHO

See PHOSee PHO

TT

T

TT

OFOF

OF

OFOF

AA

CT AnnCT Ann

A

CT Ann

AA

CT AnnCT Ann

dress,dress,

dress,

dress,dress,

ual Indeual Inde

ual Inde

ual Indeual Inde

Component locationsComponent locations

•

Component locations

Component locationsComponent locations

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ts listts list

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ar

ts list

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ts listts list

Coverage includes these additional models and chassis:

ModelsModels

Models

ModelsModels

CT-32D20UB AP341
CT-32D30B BP341
CT-32D30CB BP341
CT-32D30UB BP341

xx

x

xx

MARCH MARCH

MARCH

MARCH MARCH

2002 SET 4554 2002 SET 4554

2002 SET 4554

2002 SET 4554 2002 SET 4554

ChassisChassis

Chassis

ChassisChassis

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SET 4554 SET 4554

SET 4554

SET 4554 SET 4554

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a

PP

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TUNER INFORMATION

MAIN MAIN

MAIN

MAIN MAIN

PinPin

Pin

PinPin

(1) AGC 2.0V 2.1V 1.6V
(2) TU 1.1V 4.4V 5.4V
(3) ADRS 0V 0V 0V
(4) SCL 3.6V 3.6V 3.6V
(5) SDA 3.6V 3.6V 3.6V
(6) NC 0V 0V 0V
(7) +B 4.5V 4.5V 4.5V
(8) NC 0V 0V 0V
(9) BTL 4.2V 7.5V 8.5V
(10) NC 0V 0V 0V
(11) IF1 0V 0V 0V
(12) IF 0V 0V 0V
(13) BV 9.0V 9.0V 9.0V
(14) AUDIO .37V .37V .37V
(15) GND 0V 0V 0V
(16) AFT 1.9V 1.9V 1.9V
(17) AGC OUT 2.0V 2.1V 1.6V
(18) V 0V 0V 0V
(19) AGC CONT 0V 0V 0V
(20) GND 0V 0V 0V
(21) ST 0V 0V 0V
(22) BIL 0V 0V 0V
(23) MODE 0V 0V 0V
(24) F-MONO 0V 0V 0V
(25) MUTE 0V 0V 0V
(26) R 0V 0V 0V
(27) L 0V 0V 0V

NOTE: VHF Low Band voltages taken on channel 2.

Test equipment listed by participating manufacturer illustrates typical or
equivalent equipment used by Sams engineers to obtain measurements.
This equipment is compatible with most types used by field service
technicians.

EquipmentEquipment

Equipment

EquipmentEquipment

Oscilloscope SC3100
Generators

Digital VOM SC3100
Frequency Meter SC3100
Hi-Voltage Probe HP200
Accessory Probes TP212
Isolation Transformer PR570
Capacitance Analyzer LC102
CRT Analyzer CR7000
AC Leakage Tester PR570
Inductance Analyzer LC102
Flyback Yoke Tester TVA92
Field Strength Meter SL753
Transistor Tester TF46
Horizontal Analyzer HA-2500
Video Analyzer VG91, TVA92

TUNER TUNER

TUNER

TUNER TUNER

VHF High Band voltages taken on channel 7.
UHF Band voltages taken on channel 14.

RGB CM2125
Multiburst Signal VG91
Color Bar VG91
TV Stereo VG91

VHF LoVHF Lo

VHF Lo

VHF LoVHF Lo

VV

OLOL

TT

AA

V

OL

T

A

VV

OLOL

TT

AA

w Bandw Band

w Band

w Bandw Band

TEST EQTEST EQ

TEST EQ

TEST EQTEST EQ

GE CHARGE CHAR

GE CHAR

GE CHARGE CHAR

VHF High BandVHF High Band

VHF High Band

VHF High BandVHF High Band

UIPMENTUIPMENT

UIPMENT

UIPMENTUIPMENT

Sencore No.Sencore No.

Sencore No.

Sencore No.Sencore No.

TT

T

TT

UHF BandUHF Band

UHF Band

UHF BandUHF Band

MAIN MAIN

MAIN

MAIN MAIN

(10)

(12)

(14)

(16)

(18)

(20)

(22)

(24)

(26)

TUNER TUNER

TUNER

TUNER TUNER

(2)

(4)

(6)

(8)

TERMINAL GUIDETERMINAL GUIDE

TERMINAL GUIDE

TERMINAL GUIDETERMINAL GUIDE

τ

(1)

τ

τ

(3)

τ

τ

(5)

τ

τ

(7)

τ

τ

(9)

τ

τ

(11)

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

τ

(13)

(15)

(17)

(19)

(21)

(23)

(25)

(27)

MISCELLANEOUS ADJUSTMENTS

NOTE: This receiver employs digital customer controls. All adjustments are at
normalized position unless otherwise indicated.

B+ CHECKB+ CHECK

B+ CHECK

B+ CHECKB+ CHECK

Connect a digital DC voltmeter to pin 16 (P2) of T801 and the common tie point.
Set brightness and picture to minimum. With AC line voltage set to 120VAC, B+
should read 130V* ±1.0V*.

* Taken from a common tie point.

HIGH HIGH

VV

OLOL

TT

AA

HIGH

V

HIGH HIGH

VV

Tune in a picture. Set brightness and picture for a black raster. Connect a high
voltage probe to CRT anode. High voltage should read 30kV to 32kV.

PURITY CHECKPURITY CHECK

PURITY CHECK

PURITY CHECKPURITY CHECK

Press recall button on transmitter to enter purity check mode.

NOTE: Receiver must be in serviceman mode for purity colors to display on screen.
Press recall button to cycle through white, red, green, blue, and normal screens.

PURITYPURITY

PURITY

PURITYPURITY

Enter serviceman mode. See Purity Check to display a green raster. Loosen
deflection yoke and move it back as far as possible. Loosen locking ring and move
the purity tabs to center the vertical green band. Slowly slide the deflection yoke
forward until a uniform green screen is obtained.

CONVERGENCECONVERGENCE

CONVERGENCE

CONVERGENCECONVERGENCE

Connect a signal generator to antenna terminal and tune in a dot pattern. Adjust the
4-pole magnets to converge the red and blue dots at the center of the screen. Adjust
the 6-pole magnets to converge the red/blue dots over the green dots at the center of
the screen.

NOTE: Spread the two tabs of each set of magnets equally and opposite to converge
vertically, and rotate both tabs in the same direction to converge horizontally. Since
the four and six pole magnets interact, repeat the adjustment until center conver­gence is correct.

Tune in a crosshatch pattern. Remove rubber wedges between the deflection yoke
and CRT. Tilt deflection yoke up or down to converge the vertical lines at the top
and bottom of the screen and the horizontal lines at the left and right sides of the
screen. Tilt the deflection yoke left or right to converge the horizontal lines at the
top and bottom of the screen and the vertical lines at the left and right sides of the
screen. Repeat convergence procedure if necessary to obtain the best overall
convergence. Replace rubber wedges.

CRCR

T NECK ASSEMBLT NECK ASSEMBL

CR

T NECK ASSEMBL

CRCR

T NECK ASSEMBLT NECK ASSEMBL

OL

OLOL

T

A

TT

AA

GE CHECKGE CHECK

GE CHECK

GE CHECKGE CHECK

YY

Y

YY

ENTERING SERENTERING SER

ENTERING SER

ENTERING SERENTERING SER

Turn the receiver on and momentarily short pins 3 and 8 of connector TP. In the
upper left side of the picture, CHK is displayed in yellow. Press the action and
volume up buttons on the receiver. The CHK display turns red. The serviceman
mode is indicated by CHK displayed in red at the upper left side of the picture. Press
the power button on the remote or the action and volume down buttons on the
receiver repeatedly to select one of seven service modes.

B = Sub Adjustments C = Cut-Off Adjustments
D = Pin Cushion Adjustments M = Stereo Adjustments
P = PIP Adjustments S = Options Adjustments
X = Comb Filter Adjustments
CHK = Normal operation of channel and volume buttons.

EXIT SEREXIT SER

EXIT SER

EXIT SEREXIT SER

NOTE: Always exit serviceman mode when finished making adjustments.

Press action and power buttons on receiver control panel simultaneously for
approximately 2 seconds to exit serviceman mode. The receiver will display a self
check menu with audio on channel 3.

SUB ADJUSTMENTSSUB ADJUSTMENTS

SUB ADJUSTMENTS

SUB ADJUSTMENTSSUB ADJUSTMENTS

NOTE: Write down original On-set values in detail before making any adjustments
in case a misadjustment occurs. Press channel up or down buttons on remote to
select any of adjustment addresses. Press volume up or down buttons on remote to
change level of adjustment.

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

Sub Color (B0) 0-63 31 25
Sub Tint (B1) 0-63 31 47
Sub Brightness (B2) 0-63 31 44
Sub Contrast (B3) 0-31 16 26
Sub Tint Video (B4) 0-31 16 15
Sub Color Video (B5) 0-31 16 16
Sub Tint Component (B6) 0-127 63 58
Sub Color Component (B7) 0-63 31 41
Sub Sharp TV/Video (B8) 0-31 10 13
Sub Sharp Component (B9) 0-31 31 31
Sub Contrast Fixed (Ba) 0-31 15 31

Sub Color (B0)Sub Color (B0)

Sub Color (B0)

Sub Color (B0)Sub Color (B0)

Tune in a color bar signal. Connect oscilloscope to pin 1 of connector C1 on the C
board. Connect TPD2 to ground. Enter serviceman mode and select Sub adjustment.
Select sub color (B0). Adjust waveform for .9Vp-p ±.05Vp-p. Remove jumper.

Sub Sub

Tint (B1)Tint (B1)

Sub

Tint (B1)

Sub Sub

Tint (B1)Tint (B1)

Tune in a color bar signal. Connect oscilloscope to pin 1 of connector C1 on the C
board. Connect TPD2 to ground. Enter serviceman mode and select Sub adjustment.
Select sub tint (B1). Adjust waveform so the 1st and 4th peaks are of equal
amplitude. Remove jumper.

Sub Brightness (B2)Sub Brightness (B2)

Sub Brightness (B2)

Sub Brightness (B2)Sub Brightness (B2)

This adjustment must be made after sub picture and color temperature adjustments
are made. DO NOT adjust screen after sub brightness is set. Connect a color bar
signal with pure white and pure black to the antenna input. Set color to minimum.
Enter serviceman mode and select Sub adjustment. Select sub brightness (B2).
Adjust until the black bars start to turn gray, then decrease adjustment until bars
turn black.

SUB Contrast (B3)SUB Contrast (B3)

SUB Contrast (B3)

SUB Contrast (B3)SUB Contrast (B3)

NOTE: This adjustment is factory set, DO NOT adjust unless CRT or C board is
replaced.

Connect a color bar signal to the antenna input. Connect oscilloscope to pin 2 of
connector C1 on C board. Connect TPD2 to ground. Enter serviceman mode and
select Sub adjustment. Select sub contrast (B3). Adjust for 2.8Vp-p ± .1Vp-p from
white to black level. Do not include sync tip in measurement. Remove jumper.

VICEMAN MODEVICEMAN MODE

VICEMAN MODE

VICEMAN MODEVICEMAN MODE

VICEMAN MODEVICEMAN MODE

VICEMAN MODE

VICEMAN MODEVICEMAN MODE

Sub Adjustment Range and Default Levels

RangRang

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Rang

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Default LeDefault Le

Default Le

Default LeDefault Le

velvel

vel

velvel

On-Set On-Set

On-Set

On-Set On-Set

VV

V

VV

aluealue

alue

aluealue

MISCELLANEOUS ADJUSTMENTS continued

SET 4554 PSET 4554 P

SET 4554 P

SET 4554 PSET 4554 P

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CUTCUT

-OFF ADJUSTMENTS-OFF ADJUSTMENTS

CUT

-OFF ADJUSTMENTS

CUTCUT

-OFF ADJUSTMENTS-OFF ADJUSTMENTS

Follow same procedure used for Sub adjustments.

Cut-Off Adjustment Range and Default Levels

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

Red Cutoff (C0) 0-255 128 62
Green Cutoff (C1) 0-255 128 79
Blue Cutoff (C2) 0-255 128 79
User Brightness (C3) 0-63 31 31
Green Drive (C4) 0-127 64 57
Blue Drive (C5) 0-127 64 56
Drive C Temp (C6) 0-127 8 8
Contrast C Temp (C7) 0-127 5 5

Color Color

TT

emperature (C0,emperature (C0,

Color

T

emperature (C0,

Color Color

TT

emperature (C0,emperature (C0,

NOTE: Observe low and high brightness areas of a B/W picture for proper tracking.

Enter serviceman mode and select Cut-Off adjustments. Set the red cutoff (C0),
green cutoff (C1), and blue cutoff (C2) for a gray picture. Set the green drive (C4)
and the blue drive (C5) for correct white areas.

OPTIONS ADJUSTMENTSOPTIONS ADJUSTMENTS

OPTIONS ADJUSTMENTS

OPTIONS ADJUSTMENTSOPTIONS ADJUSTMENTS

Follow same procedure used for Sub adjustments.

Options Adjustment Range and Default Levels

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

ABL Gain (S0) 0-3 3 3
ABL Point (S1) 0-3 3 3
RGB Brightness (S2) 0-15 8 8
RGB Gamma (S3) 0 , 1 1 1
Color Gamma (S4) 0 , 1 1 1
VSM-G (S5) 0 , 1 0 0
BS Point (S6) 0-7 7 6
Clock Adjust (S7) 0-255 128 109
Loud Comp (S8) 0-31 31 31
Caption Dig Filter SW (S9) 0 , 1 0 0
Caption Scroll (Sa) 0 - 2 1 1
RGB Matrix (Sb) 0-7 6 6
RGB Matrix Comp (Sc) 0-7 5 5

ClocCloc

k Adjustment (S7)k Adjustment (S7)

Cloc

k Adjustment (S7)

ClocCloc

k Adjustment (S7)k Adjustment (S7)

Connect a frequency counter to pin 13 of IC001. Turn receiver off. Record the
frequency. Turn the receiver on and enter the serviceman mode and select options
adjustments. Select clock adjustment (S7). Adjust (S7) based on the following
formula:

(S7) = 128 + .901 X 1000000 [244.1406 - pin 13 (measured in Hz)]

RangRang

e Default Lee Default Le

Rang

e Default Le

RangRang

e Default Lee Default Le

C1, C1,

C2, C2,

C1,

C2,

C1, C1,

C2, C2,

RangRang

Rang

RangRang

C4, C4,

C4,

C4, C4,

ee

e

ee

C5 ) C5 )

C5 )

C5 ) C5 )

velvel

vel

velvel

DefaultDefault

Default

DefaultDefault
LeLe

velvel

Le

vel

LeLe

velvel

244.1406

On-Set On-Set

On-Set

On-Set On-Set

On-SetOn-Set

On-Set

On-SetOn-Set
VV

aluealue

V

alue

VV

aluealue

VV

V

VV

aluealue

alue

aluealue

PIP ADJUSTMENTSPIP ADJUSTMENTS

PIP ADJUSTMENTS

PIP ADJUSTMENTSPIP ADJUSTMENTS

PIP adjustments can be entered but no adjustments should be necessary. They are
factory set for normal PIP performance. Write original On-set values in case one of
the adjustments is changed by mistake. Confirm that the values are as shown for
default level.

PIP Adjustment Range and Default Levels

DefaultDefault

Default

DefaultDefault

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

PIP Color (P0) 0-127 92 55
PIP Tint (P1) 0-255 54 54
PIP Brightness (P2) 0-31 22 5
PIP Contrast (P3) 0-127 80 55
Up 1/9 (P4) 0-255 26 26
Down 1/9 (P5) 0-255 143 143
Left 1/9 (P6) 0-255 10 10
Right 1/9 (P7) 0-255 101 101
Up 1/16 (P8) 0-255 26 26
Down 1/16 (P9) 0-255 160 160
Left 1/16 (Pa) 0-255 10 10
Right 1/16 (Pb) 0-255 116 116
PIP Freerun (Pc) N/A N/A 0
PIP YDL (Pd) 0-15 4 4

STEREO ADJUSTMENTSSTEREO ADJUSTMENTS

STEREO ADJUSTMENTS

STEREO ADJUSTMENTSSTEREO ADJUSTMENTS

All adjustments were made using a MTS TV / stereo generator connected to the
antenna terminal. Set the customer controls to normal listening levels and select
stereo mode.

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

Input Level (M0) 0-63 33 30
Low - Level Separation (M1) 0-15 6 7
High - Level Separation (M2) 0-63 25 28

Input LeInput Le

Input Le

Input LeInput Le

On generator select pilot, 1kHz audio frequency, and L+R modulating signal.
Connect an oscilloscope to pin 22 of IC2201. Enter serviceman mode and select
stereo adjustments. Select input level (M0). Adjust the data value for 1Vp-p.

High LeHigh Le

High Le

High LeHigh Le

On generator select pilot, 300Hz audio frequency, and left modulating signal.
Connect an oscilloscope to pin 22 of IC2201. Enter serviceman mode and select
stereo adjustments. Select low level separation (M1). Adjust the data value for
minimum amplitude of waveform. On generator select 8kHz audio frequency. Select
high level separation (M2). Adjust the data value for minimum amplitude of the
waveform. Repeat until no further decrease in amplitude can be obtained.

vel (M0)vel (M0)

vel (M0)

vel (M0)vel (M0)

vel Separation (M1) and Lovel Separation (M1) and Lo

vel Separation (M1) and Lo

vel Separation (M1) and Lovel Separation (M1) and Lo

RangRang

ee

LeLe

RangRang

Rang

RangRang

Le

LeLe

ee

e

ee

velvel

vel

velvel

w Lew Le

w Le

w Lew Le

Rang

e

RangRang

ee

MTS Adjustment Range and Default Levels

On-SetOn-Set

On-Set

On-SetOn-Set
VV

aluealue

V

alue

VV

aluealue

Default LeDefault Le

Default Le

Default LeDefault Le

velvel

On-Set On-Set

vel

On-Set

velvel

On-Set On-Set

vel Separation (M2)vel Separation (M2)

vel Separation (M2)

vel Separation (M2)vel Separation (M2)

VV

V

VV

aluealue

alue

aluealue

COMB FILCOMB FIL

COMB FIL

COMB FILCOMB FIL

NOTE: Write down original On-set values in detail before making any adjustments
in case a misadjustment occurs.

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

Comb Clip Level (X0) 0 - 255 152 152
Comb Switch (X1) 0 - 63 12 12
Comb Limit (X2) 0 - 63 24 24
Comb Core (X3) 0 - 127 41 41
Comb RF Delay (X4) 0 - 127 20 19
Comb Video Delay (X5) 0 - 127 18 18
Comb VMLM (X6) 0 - 127 90 90
Comb VMCO (X7) 0 - 63 24 24
Comb Sharp (X8) 0 - 255 123 123
Comb VM Level (X9) 0 - 255 255 255
Comb VMPKF (Xa) 0 , 1 1 1
Comb H Lock Mode (Xb) 0 , 1 1 1
Comb H Lock (Xc) 0 - 511 70 60
Comb H Sep 1 (Xd) 0 - 511 313 313
Comb H Sep 2 (Xe) 0 - 511 266 266
Comb Sub H Lock Mode (Xf) 0 , 1 0 0
Comb Sub H Lock (X10) 0 - 511 70 70
Comb Sub H Sep 1 (X11) 0 - 511 313 313
Comb Sub H Sep 2 (X12) 0 - 511 266 266

PIN CUSHION ADJUSTMENTSPIN CUSHION ADJUSTMENTS

PIN CUSHION ADJUSTMENTS

PIN CUSHION ADJUSTMENTSPIN CUSHION ADJUSTMENTS

Follow same procedure used for Sub adjustments.

AdjustmentAdjustment

Adjustment

AdjustmentAdjustment

H Position (D0) 0 - 31 16 16
V Size (D1) 0 - 63 31 30
V S Correction (D2) 0 - 7 4 4
V Lin Correction (D3) 0 - 15 14 15
E/W Trapezium (D4) 0 - 15 8 8
V AGC (D5) 0 , 1 1 1
V Position (D6) 0 - 7 1 0
V Centering (D7) 0 - 127 63 63
V Centering DAC SW (D8) 0 , 1 0 0
V BLK Start Phase (D9) 0 - 31 12 7
V BLK Stop Phase (Da) 0 - 31 14 14

Horizontal Centering (D0)Horizontal Centering (D0)

Horizontal Centering (D0)

Horizontal Centering (D0)Horizontal Centering (D0)

Tune in a crosshatch pattern. Enter serviceman mode and select Pin Cushion
adjustments. Select horizontal position (D0) adjustment and adjust crosshatch
pattern for correct horizontal centering.

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Tune in a crosshatch pattern. Enter serviceman mode and select Pin Cushion
adjustments. Select vertical size (D1) adjustment and adjust crosshatch pattern for
little over scan at the top and the bottom of the screen.

TER ADJUSTMENTSTER ADJUSTMENTS

TER ADJUSTMENTS

TER ADJUSTMENTSTER ADJUSTMENTS

Comb Filter Adjustment Range and Default Levels

DefaultDefault

Default

DefaultDefault

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Pin Cushion Adjustment Range and Default Levels

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On-SetOn-Set

On-Set

On-SetOn-Set
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On-SetOn-Set

On-Set

On-SetOn-Set
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ν The parts listed here are those not

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ormation

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usually available from a well-stocked
supply cabinet or bin.

ν Where items may be replaced with

equivalent parts, several alternates are
shown from participating vendors.

ν On the parts lists, safety items are

marked with a

# #

# to remind you that only

# #

exact replacements are recommended
for these items.

ν When ordering parts, state the model

number, part number, and description.

tsts

Obtaining PObtaining P

Obtaining P

Obtaining PObtaining P

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Many of these parts are available from your
local Sams authorized distributor or the
manufacturer of the equipment. Call Sams
for the name of your nearest distributor:

800-428-7267

Or consult the Sams

address of the original equipment
manufacturer.

PP

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Information on test equipment and
replacement parts is listed in these pages
for the following participating vendors.
Consult the Sams
current address.

ν NTE Electronics, Inc. (NTE)

ν Sencore, Inc.

Annual Index

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V

endor

VV

endorendor

Annual Index

for the

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s

ss

for their

P

PP

PP
ANASONIC MODEL CT

ANASONIC MODEL CTANASONIC MODEL CT

ANASONIC MODEL CTANASONIC MODEL CT

-32D20B (CHASSIS AP341)

-32D20B (CHASSIS AP341)-32D20B (CHASSIS AP341)

-32D20B (CHASSIS AP341)-32D20B (CHASSIS AP341)

SET 4554 PSET 4554 P

SET 4554 P

SET 4554 PSET 4554 P

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