Service Manual
Model HPS-2185FS
Customer: Makro
Code: 1.01.72505.59
_____________________________________
Approved Signature
HPS-2185FS
INDEX
1. PRODUCT SPECIFICATION
2. PACKAGING BOX
3. TECHNICAL SPECIFICATION
4. CALIBRATION SCRIPT
5. MATERIAL LI ST
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 VI EW
9. BLOCK DIAGRAM
HPS-2185FS
3. TECHNICAL SPECIFICATION
Procedure to check up color TV electrical parameters
3.1 AUDIO
3.1.1 Output Power at 10% THD
1
o
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 400Hz 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 amplifi er 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 2,50 3,50 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 87,5% and audio signal with 400Hz
frequency modulated in FM with 25kHz de viation.
HPS-2185FS
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
- 25,00 500,00 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 n/a n/a n/a dB
10kHz n/a n/a n/a dB
3.1.4 Audio frequency response for the stereo television set with tonality
control
a) Repeat the above procedures (item 1.3) for the following additional
conditions:
HPS-2185FS
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 deviations.
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 deviations. Calculate the separation trough the
equate:
Sep
(3kHz) L→R
= 20 log (VL/VR
i) Repeat the procedures e, f, g, however selecting only the right channel with
300Hz and 30% modulation and immediately the right channel with 3kHz
and 30% modulation and calculate the separation in 300Hz and 3kHz
trough the expression :
Sep
(300Hz) R→L
=20 log (VR/VL)
Sep
(3kHz) R →L
=20 log (VR/VL)
Condition Minimum Nominal Maximum Unit
Sep
(300Hz) L →R
15 21 - dB
Sep
(3kHz) L →R
15 18 - dB
Sep
(300Hz) R →L
15 21 - dB
Sep
(3kHz) R →L
15 19 - dB
HPS-2185FS
3.1.6 Nível de saída e distorção do sinal S.A.P.
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 output.
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/SAP generator for 400 Hz sine wave and 100%
modulation.
f) Active the SAP function in the Test Television.
g) Read Vac at the AC volt -distortion-meter.
h) Repeat all above procedures, connecting the volt-distortion-meter at the
Right channel.
Minimum Nominal Maximum Unit
Output level
450 500 550 VAC
Distortion (THD)
0,2 1,0 1,5 %
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 30%
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.
Minimum Nominal Maximum Unit
40,00 50,00 - dB
HPS-2185FS
3.2 POWER SUPPLY
3.2.1 Consume
a) Connect the TV under test through an electronic wattmeter at the
220Vac/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 400Hz 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 Sin k power.
e) Repeat all below procedures, connecting now the television under test to a
110Vac/60 Hz line.
Condition Minimum Nominal Maximum Unit
TV ON 117V - 84,00 85,00 W
TV ON 234V - 80,00 82,00 W
STAND BY 117V - 1,80 2,00 W
STAND BY 234V - 2,70 3,00 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 (the preferred channel will be
defined by the local unit), modulated with a 88%video signal white pattern,
and a ± 25kHz deviation FM carrier with a 400Hz sine wave audio signal.
c) TV setup in PP condition.
d) Utilizing a electronic DC voltmeter (over 10 M input impedance), read the
next point in the power supply.
Condition Test Point Minimum Nominal Maximum Unit
110V
+B 103V (Cathode of D819) 102,00 103,00 104,00 V
110V
+B 16V (Cathode of D808) 14,00 15,50 16,50 V
HPS-2185FS
3.2.3 Main Power Supply Regulation with fluctuation of the line
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
100Vac +B 118V 117 118 119 V
240Vac +B 17V 16,5 17,5 18,5 V
3.2.4 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 (the preferred channel will be
defined by the local unit), modulated with a 88%video signal white pattern,
and a ± 25kHz deviation FM carrier with a 400Hz sine wave audio signal.
c) Ajustar a TV na condição ”PP”.
d) Através de um voltímetro eletrônico DC, com impedância de entrada
superior a 10MΩ, medir as tensões de alimentação auxiliares do FLY
BACK.
e) Medir a tensão em “RMS” nos pinos de filamento do cinescópio através de
um “voltímetro TRUE RMS”.
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 of D402) +12,00 +13,00 +14,00 Vdc
“PP” 117Vac
E-12V (Anode of D403) -11,00 -12,00 -13,00 Vdc
“PP” 117Vac
E180V (Anode of D404) 170,00 180,00 195,00 Vdc
“PP” 117Vac
FIL (RMS) (Pins 9 and 10
of V901)
5,70 6,30 6,90 Vrms
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) Repeat the procedures a and b.
d) Adjust the bright, color and contrast controls to minimum and read the high
voltage E.H.T. (IAmin).
e) 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 until 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).
HPS-2185FS
Condition Minimum Nominal Maximum
Unit
0mA 28,41 kV
1mA 26,50 kV
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
3.3 Frame geometric
3.3.1 Wide and height of the frame
Preparation:
a) Connect the receiver under test to a 117 Vac line.
Turn ON the TV and adjust the bright and contrast controls to maximum,
and the saturation and volume controls to minimum. Wait the pre hitting
time (see model specification).
b) Apply to the antenna input a 60 dBµV signal – 88% modulated with a
“PHILIPS” pattern (the preferred channel will be defined by the fabric unit ).
c) Adjust the contrast control to maximum and reduce the bright control until
the black level of the image to turn “black”.
d) Observe the pattern image and make a block count in the horizontal and
vertical direction (see model specification).
HPS-2185FS
Minimum Nominal Maximum Unit
Height (PAL-N) n/a n/a n/a Blocks
Wide (PAL-N) n/a n/a n/a Blocks
Height (PAL-M) n/a n/a n/a Blocks
Wide (PAL-M) n/a n/a n/a Blocks
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)-(c/d)| n/a n/a n/a
|(p/q)-(r/s)| n/a n/a n/a
HPS-2185FS
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 n/a n/a n/a
b/M n/a n/a n/a
c/M n/a n/a n/a
d/M n/a n/a n/a
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