CCE HPS-1478, HPS-2078 Service Manual
Service Manual
Model HPS-1478
Customer: Makro
CODE: 1.01.72451.54
_____________________
Approved Signature
HPS-1478
INDEX
1. PRODUCT SPECIFICATION
2. PACKAGING BOX
3. TECHNICAL SPECIFICATION
4. CALIBRATION SCRIPT
5. MATERIAL LIST
6. ELECTRICAL SCHEME
6.1 MAIN AND REMOTE CONTROL PCB
7. SILKTOP AND SOLDERS
7.1 MAIN PCB
7.2 REMOTE CONTROL PCB
8. EXPLODED VIEW
9. BLOCK DIAGRAM
GABINETE FRONTAL
MEC 1.57.72451.02
INJ 1.67.72451.01
ACAB 1.67.72451.02
TECLADO FUNÇÕES
MEC 1.77.72411.06
INJ 1.67.72411.09
ACAB 1.67.72411.10
TECLA POWER
MEC 1.67.72411.03
INJ 1.67.72411.01
ACAB 1.67.72411.02
ESCALA
1:3
FOLHA
2/4
HPS-1478
GABINETE FRONTAL
ABS R PR
1.86.90200.90
PS HI 478 DOW + CZ MÉDIO OPCIONAL
1.86.02063.99 + 1.86.96123.08
EMBLEMA CCE
1.67.72369.04
SENSOR
ON OFF
VOL
CH
MENU
PINTURA
PRATA CRISTAL
1.87.33801.29
IMPRESSÃO
BRANCO
1.87.33701.28
TECLA POWER
SAN AZUL MARINHO
1.86.91604.60
PINTURA
PRATA MEDIUM
1.87.33801.17
TECLADO FUNÇÕES
ABS CZ
1.86.90014.08
IMPRESSÃO
PRETO
1.87.33701.50
GABINETE TRASEIRO
MEC 1.57.72411.02
INJ 1.57.72411.09
INJ 1.57.72411.05 OPCIONAL
ETIQUETA IDENTIFICAÇÃO
ACAB 1.06.72451.04
GABINETE TRASEIRO
PS HI PRETO
ETIQUETA
IDENTIFICAÇÃO
ESCALA
1:3
FOLHA
3/4
HPS-1478
CONHEÇA A AMAZÔNIA
CONHEÇA A AMAZÔNIACONHEÇA A AMAZÔNIA
PRODUZIDO NO
PÓLO INDUSTRIAL
DE MANAUS
A
(MONO)
L
R
AV 1 IN
V
ATENCIÓNATENCIÓN
CAUTIONCAUTION
NO ABRA, RIESGO DE CHOQUE ELÉCTRICO.NO ABRA, RIESGO DE CHOQUE ELÉCTRICO.
RISK OF ELECTRIC SHOCK. DO NOT OPEN.RISK OF ELECTRIC SHOCK. DO NOT OPEN.
EXT 1
ANT
75
UHF/VHF
CONHEÇA A AMAZÔNIA
ETIQUETA
Nº SÉRIE
RC-206
ESCALA
1:1
FOLHA
4/4
GABINETE SUPERIOR
MEC 1.57.72254.05
INJ 1.57.72411.03
ACAB 1.57.72411.04
GABINETE INFERIOR
MEC 1.57.52181.04
ACAB 1.57.72254.08
TAMPA PORTA PILHAS
MEC 1.57.52181.05
ACAB 1.57.72254.09
TECLADO DE BORRACHA
ACAB 1.77.72357.02
IMPRESSÃO
BRANCO
1.87.33701.28
GABINETE SUPERIOR
GABINETE INFERIOR
TAMPA P/ PILHAS
ABS A.F. CZ
1.86.90011.08
ABS A.F. CZ PH OPCIONAL
1.86.90020.08
P.SKIPP.SKIP
P.CHANNELP.CHANN EL
OSD/OUTOSD/OUT
MENUMENU
AVAV
TIMERTIMER
DSCDSC
CCCC
AUTO IMAGEAUTO IMAGE
ON/OFFON/OFF
MUTEMUTE
SLEEPSLEEP
RC-206RC-206
11
44
77
22
55
88
00
33
66
9 9
CH+CH+
VOL+VOL+VOL-VOL-
CH- CH-
HPS-1478
3. TECHNICAL SPECIFICATION
Procedure to check up color TV electrical parameters
3.1 Audio
3.1.1 Output power at 10% THD
1st method: antenna input connection
a) TV setup in “PP” condition (frequency and channel factory defined).
b) Apply 60dBµV signal to antenna input, modulated with white pattern in 88%
and audio signal with 1kHz frequency modulated in FM with ± 25kHz
deviation.
c) Connect to the audio power amplifier output a resistive load with equivalent
Ohm value of speaker used on the tested TV.
d) Connect a AC Voltmeter/Distortion Meter to the resistive load and increase
volume control until Distortion Meter reading be 10%.
e) Measure voltage on the resistive load and calculate power through next
equation:
P = (V²/R)
Where “V” is voltage in VOLTS, “R” is resistive load in OHMS e “P” is power
in WATTS.
2nd method: connection through external video and audio input
a) TV setup in “PP” condition.
b) Connect a color bar generator (PAL-M system) to video input.
c) Connect an audio generator with 500mVAC level and 400Hz sinusoidal
frequency to audio input.
d) Connect to the power amplifier output a resistive load with equivalent Ohm
value of speaker used on the tested TV.
e) Connect a AC Voltmeter/Distortion Meter to the resistive load and increase
volume control until Distortion Meter reading be 10%. Measure voltage on
the resistive load and calculate power through next equation:
P = (V²/R)
Where “V” is voltage in VOLTS, “R” is resistive load in OHMS and “P ” is power
in WATTS.
Minimum Nominal Maximum Unit
2.00 2.90 - W
3.1.2 Audio Residual
a) TV setup in “PP” condition.
b) Apply 60dBµV signal (frequency and channel factory defined) to antenna
input modulated with white pattern at 88% and audio signal with 1kHz
frequency modulated in FM with 25kHz de viation.
HPS-1478
c) Connect an oscilloscope to power amplifier output (connect for the
speaker).
d) Adjust volume to minimum.
e) Use the oscilloscope to measure peak-to-peak voltage, in Volt peak-to-peak
(Vpp).
Minimum Nominal Maximum Unit
- 25 500 mVpp
3.1.3 Audio frequency response in TV’s without tone control
a) TV setup in “PP” condition.
b) Connect a color bar generator (PAL-M system) to video-in.
c) Connect to the audio input TV - an audio generator adjusts to 500 mVac
level, and sine wave 1kHz.
d) Connect to the output power amplifier a resistive load with the same value
of the impedance speaker.
e) Connect an AC voltmeter over the resistive load and adjust volume control
until obtain 1 Vac).
f) Realign the audio generator to 100 Hz sine wave at the same level (500
mVac).
g) Read the new voltage in the resistive load and calculate the change in dB
through next equation:
A
(100Hz)
=20 log(VLF /V
REF)
The result is defined in “Decibel units “
h) Readjust the audio generator frequency to 10 kHz at the same level.
i) Read the new voltage Vh at the resistive load and calculate the change in
dB through the next equation:
A
(10kHz)
=20log(VHF/V
REF
)
Condition Minimum Nominal Maximum Unit
100Hz -4,00 0,00 +2,00 dB
10kHz -5,00 -1,00 +3,00 dB
HPS-1478
3.1.4 Áudio frequency response for the stereo television set with tonality
control
a) Repeat the above procedures (item 1.3) for the following additional
conditions:
Condition Minimum Nominal Maximum Unit
Bass control in max. position 100Hz
- - - dB
Treble control in the meddle. 10kHz
- - - dB
Bass control in the min posit ion. 100Hz
- - - dB
Treble control in the meddle. 10kHz
- - - dB
Bass contr. in the meddle post.. 100Hz
- - - dB
Treble control int the min pos.. 10kHz
- - - dB
Bass contr. in the meddle pos. 100Hz
- - - dB
Treble contr in the max. pos.. 10kHz
- - - dB
3.1.5 Channel separation in Stereo reception for the stereo television set
a) TV setup in PP condition.
b) Apply a 60dBµV signal (frequency and channel factory defined) with 88%
video modulation and audio stereo carrier modulation within the standard
“MTS” (BTSC).
c) Connect an AC double voltmeter at the audio output L-R.
d) Adjust the volume control to max. and the tremble, bass and balance to
middle position.
Note:
ü Disconnect the speakers for more comfortable work.
e) Adjust the stereo generator for left channel only – with 30% modulation of
300 Hz sine wave and 7.5 kHz deviation.
f) Read the Double Voltammeter value Vac corresponding of Left and Right
channel and calculate the stereo separation trough the equate:
Sep
(300Hz) L →R
= 20 log (VL/VR)
g) Adjust the stereo generator for left channel only – with 30% modulation of
3kHz sine wave and 7.5 kHz deviation.
Sep
(3kHz) L→R
= 20 log (VL/VR)
h) Repeat the procedures e, f and g, and now select Right channel only, at the
same conditions above mentioned.
Sep
(300Hz) R→L
= 20 log (VR/VL)
Sep
(3kHz) R →L
= 20 log (VR/VL)
HPS-1478
Condition Minimum Nominal Maximum Unit
Sep
(300Hz) L →R
- - - dB
Sep
(3kHz) L →R
- - - dB
Sep
(300Hz) R →L
- - - dB
Sep
(3kHz) R →L
- - - dB
3.1.6 Output and distortion level of S.A.P. signal for the stereo television set.
a) TV setup in PP condition.
b) Apply a 60dBµV signal (frequency and channel factory defined) with 88%
video modulation, and Stereo / S.A.P audio signal carrier in accordance of
standard “MTS” (BTSC).
c) Connect an AC volt-distortion-meter at the Left channel (pin 27 – IC604)
small signal output.
Note:
ü Disconnect the speakers for more comfortable work.
d) Adjust the Stereo/SAP generator for 400 Hz sine wave and 100%
modulation.
e) Active the SAP function in the Test Television.
f) Read Vac at the AC volt -distortion-meter.
g) Repeat all above procedures, connecting the volt-distortion-meter at the
Right channel (pin 21 – IC604) small signal audio output.
Minimum Nominal Maximum Unit
Output Level
- 490 - mVAC
Distortion (THD)
- - 2 %
3.1.7 AM Rejection
a) TV setup in PP condition.
b) Connect at the IF sound input a FM generator adjust to 4.5 MHz modulated
with 400 Hz sine wave and +/ - 25 kHz deviation and 90 dBuV level.
c) Connect an AC voltmeter in the audio detector output (after the emphasis
circuit) and read the VFM tension.
d) Connect at the IF sound input a AM generator pre -adjust to 4.5 MHz 40%
modulated with 400 Hz sine wave, and 90 dBuV level.
e) Read the Vam value in the voltmeter.
AM rejection will now be calculated by the equation:
RejAM = 20 log( VFM/VAM)
Note:
ü Because this parameter is designed to define only the one circuit TV perform,
the startup conditions adjust and what’s circuits will be supplied, it will be
defined separately for each one model.
HPS-1478
Minimum Nominal Maximum Unit
30,00 40,00 60,00 dB
3.2 POWER SUPPLY
3.2.1 Consume
Consume
a) Connect the TV under test through an electronic wattmeter at the
234Vac/60Hz line.
b) Turn-on the TV set and apply a 60dBµV (the preferred channel must to be
defined by the production unit), modulated with a 88% video signal white
pattern, and a ± 25 kHz deviation FM carrier with a 1kHz sine wave audio
signal.
c) Adjust for max. the bright, contrast and volume controls, and read the Sink
Power show at the wattmeter.
d) Active Standby mode and read again the Sink power.
e) Repeat all below procedures, connecting now the television under test to a
117Vac/60 Hz line.
Condition Minimum Nominal Maximum Unit
117VAC “PP” - 42.0 52.0 W
117VAC Stand-By - 8.5 10.0 W
234VAC “PP” - 42.0 52.0 W
234VAC Stand-By - 9.0 12.0 W
3.2.2 Main Power Supply
a) Connect the TV set under test to 117Vac/60Hz line.
b) Turn On the TV set and apply a 60dBµV RF signal modulated by a white
pattern video signal and a 4.5 MHz +- 25 kHz deviation FM signal
modulated by a 1kHz audio signal (the preferred channel will be defined by
the local unit).
c) Adjust the TV to a “PP” condition.
d) Utilizing an electronic DC voltmeter (over 10 M input impedance), read the
next point in the power supply:
Condition Test Point Minimum Nominal Maximum Unit
“PP” 117VAC
+B 103V (Cathode of D807) 102.00 103.00 104.00 VDC
“PP” 117VAC
+B 16V (Cathode of D808) 14.00 15.50 16.50 VDC
HPS-1478
3.2.3 Main Power Supply Regulation with fluctuation of the line
a) Repeat the procedure of the item 2.2 when the television is connected to
the electric net with 100VAC/60Hz and also 240VAC/60Hz.
Condition Test Point Minimum Nominal Maximum Unit
“PP” 240VAC
+B 103V (Cathode of D807) 102.00 103.00 104.00 VDC
“PP” 240VAC
+B 16V (Cathode of D808) 14.00 15.50 16.50 VDC
Condition Test Point Minimum Nominal Maximum Unit
“PP” 100VAC
+B 103V (Cathode of D807) 102.00 103.00 104.00 VDC
“PP” 100VAC
+B 16V (Cathode of D808) 14.00 15.50 16.50 VDC
3.4 Auxiliary power supply from Fly Back Transformer
a) Connect the TV under test to a 117 Vac/60 Hz line.
b) Turn On the TV set and apply a 60dBµV RF signal modulated by a white
pattern video signal and a 4.5 MHz +- 25 kHz deviation FM signal
modulated by a 1kHz audio signal (frequency and channel factory defined).
c) Adjust the TV to a “PP” condition.
d) Utilizing an electronic DC voltmeter (over 10 M input impedance), read the
auxiliary power supply from Fly -Back transformer.
e) Read the RMS voltage apply to the CRT heat. Utilizing a true RMS
voltmeter.
f) When exist, read the auxiliary wind Peak to peak voltage, utilizing an
oscilloscope.
Condition Test Point Minimum Nominal Maximum Unit
“PP” 117VAC
E+12V (Cathode do D402) +11.00 +12.00 +13.00 VDC
“PP” 117VAC
E-12V (Anode do D403) -11.00 -12.00 -13.00 VDC
“PP” 117VAC
E180V (Anode do D404) 165.00 175.00 185.00 VDC
“PP” 117VAC
Heater (RMS) (Pins 5 and 4
of V901)
5.70 6.30 6.90 V
RMS
HPS-1478
3.2.5 High Voltage (EHT)
a) Connect a DC voltmeter to the resistor wired to the Fly Back ABL pin (the
position and value of this resist is defined by each model.
b) Connect a high voltage electronic DC voltmeter (over 1G impedance) in the
electronic tube high voltage plug.
c) Adjust the bright, co lor and contrast controls to minimum and read the high
voltage E.H.T. (IAmin).
d) Adjust the bright control to the maximum position, contrast control to the
maximum position and monitoring the voltage through the ABL resistor,
adjust the bright control un til the DC voltage reached the specific value. The
anode electric current will now be define by the following equation:
IA=(V
ABL/RABL
)
Read the high voltage E.H.T. in this conditions (IAmin).
Condition Minimum Nominal Maximum Unit
IAmin. 22.30 23.50 24.75 kVDC
IA=1mA 20.60 21.70 22.85 kVDC
3.2.6 Dielectric Rigid
Adjust the HI_POT equipment to 1500 Vac voltage, and the desired test current, in
accordance with the below specification table. When the TV set has a power
switch, make sure that this switch stay in the ON mode. Connect the ground
terminal of the test equipment in both pins of the line cord TV, and apply the HIPOT terminal (1.5KV) in every extern metal parts of the TV under test for one
minute. In this condition the electric current must be equal or inferior that shown in
the below specific table
Condition Minimum Nominal Maximum Unit
1500VAC - - 2,00 mAAC
HPS-1478
3.3 Frame geometric
3.3.1 Wide and height of the frame
Preparation:
a) Connect the receiver under test to a 117VAC line.
b) TV setup in PP condition.
c) Apply to the antenna input a 60dBµV signal – 88% modulated with the
CROSSHATCH pattern (the preferred channel will be defined by the fabric
unit).
d) Adjust the contrast control so that average Iabl is the same to 750µA
(Iabl=750µA).
I
ABL
=(V
ABL/RABL
)
e) Observe the pattern image and make a block count in the horizontal and
vertical direction.
Minimum Nominal Maximum Unit
Height (PAL-N) 10,07 10,60 11,13 Blocks
Wide (PAL-N) 13,96 14,70 15,43 Blocks
Height(PAL-M) 10,26 10,80 11,34 Blocks
Wide (PAL-M) 14,15 14,90 15,64 Blocks
HPS-1478
3.3.2 Frame centralization
Preparation:
a) Connect the receiver under test to a 117 VAC line.
Turn On the TV and position the bright and contrast control to the
maximum, and the saturation and volume controls to the minimum position.
Wait for a pre-heating period.
b) Apply a CIRCLE pattern 60dBµV signal with 88% modulation (the preferred
channel will be de fined by the fabric unit).
c) Position to “nominal” the bright and contrast controls.
d) For the next reading, please observe the figure B.
e) Observe the image and make the measures (in centimeters) of the
distances a, b, c and d.
f) Apply the following formula to calculate the horizontal centralization.
(a/b)-(d/c)
g) Observe the image and make the measures (in centimeters) of the
distances p, q, r and s.
h) Apply the formula to calculate the vertical centralization.
(p/q)-(s/r)
Minimum Nominal Maximum Unit
|(a/b)-(d/c)| - 0,00 0,10
|(p/q)-(s/r)| - 0,00 0,20
HPS-1478
3.3.3 FRAME ASPECT RELATED
a) Connect the receiver under test to a 117VAC line.
Turn on the TV and adjust bright and contrast control to max. position,
saturation and volume to min. Position. Wait for the heat period.
b) Apply to the antenna input a 60dBµV level signal with 88% modulated
PHILIPS pattern (frequency and channel factory defined).
c) Adjust bright and contrast control to nominal position.
d) For the next reads, please utilizes figure C for reference.
e) Observe the screen pattern and check the distances a, b, c, d (in
centimeters).
f) Apply the formula:
M = (a + b + c + d) / 4, and verify the proportion a/M, b/M, c/M e d/M.
Check for systems PAL-M and PAL-N
Minimum Nominal Maximum Unit
a/M 0,95 1,00 1,05
b/M 0,95 1,00 1,05
c/M 0,95 1,00 1,05
d/M 0,95 1,00 1,05
HPS-1478
3.3.4 Horizontal Linearity
a) Connect the receiver under test in 117V
AC
line.
Turn on the TV and adjust bright and contrast control to max. position,
saturation and volume to min. Position. Wait for the heat period.
b) Apply to the antenna input a 60dBµV level signal with 88% modulated
PHILIPS pattern (frequency and channel factory defined)
c) Adjust bright and contrast control to nominal position
d) For the next reads, please take references by figure D.
e) Observe the screen pattern and check the distances An - 14 blocks (in
centimeters)
f) Calculate the middle distances through blocks
M = An/14.
Horizontal deviation between major blocks (DHM)
Read first the 14 blocks wide (from b1 to b14) and select the biggest read
(b
max
) for calculate the deviation:
DHM = b
máx
/M
Minor Horizontal deviation between blocks (DHm)
Read first the 14 blocks wide (from b1 to b14) and select the smallest read
(b
min
) for calculate the deviation:
DHm = b
mín
/M
(*)Check for signals PAL-M and PAL-N
PAL-M Minimum Nominal Maximum Unit
DHM - 1,10 1,30
DHm 0,70 0,95 -
PAL-N Minimum Nominal Maximum Unit
DHM - 1,10 1,30
DHm 0,70 0,95 -
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