Parker TS2192 User manual

COLOR TELEVISION
TS2192

CONTENTS
Safety instruction………………………………………………………………………..…
Alignment items and procedure……………………….…….…………………………………
Test equipment……………………………………………………………………………..
Debugging instruction……………………………………………….………….………….
Block diagram…………………………………..………………………………….…………
IC block diagram………………………………………………………………………..……
Wiring diagram …………………………………………………………………………….
Schematic diagram…………………………………………………………………………
APPENDIX-A: Assembly list
APPENDIX-B: Exploded View
1
3
4
4
11
12
17
18

1
1. Safety instruction
Before servicing and aligning this equipment, please read the following “X-RAY RADIATION
PRECAUTION”, “SAFETY PRECAUTION” and “PRODUCT SAFETY NOTICE”.
1.1 X-ray radiation protection
1.1.1 Too high voltage will produce radiation harmful to human health. To avoid such risk, the high
voltage should be regulated within the limited value. The normal value of the high voltage of this
receiver is 26.5kV at 0.9mA.
Under any circumstances, the high voltage should not exceed 30kV. When the TV set needs to be
fixed, please follow the inspection procedures of high voltage in item 4.6.1 under this
instruction ”Inspection of high voltage”. It is suggested that the value of high voltage be recorded
as part of maintenance work. It is most essential at the same time to use precise and dependable
high voltage meter.
1.1.2 This set is equipped with X-ray over radiation (FS) protection circuit to prevent over radiation of
X-ray in the case of abnormal increase of B+ voltage in the set or the reverse capacitor is open
circuit. Whenever fixing the set, FS circuit must be checked according to the inspection
procedures as in item 4.6.2 of this instruction, ”X-ray radiation protection test” to make sure the
circuit functions well.
1.1.3 The only source of TV set producing X-ray is CRT. To avoid X-ray radiation during the whole
process, the exact same type of CRT designated in the detail list must be replaced, when there is
a need to change CRT.
1.1.4 Some parts in this receiver have special safety-related characteristics for X-RAY RADIATION
protection. Please read the “Points of attention for products safety” before changing the
components, for the sake of safety.
1.2 Safety measures
1.2.1 When the TV set is working, the high voltage will be as high as approximately 30kV. When
adjusting the set after removing the cover or opening the back cabinet there will be risk of electric
shock, so
a) Before detaching the anode cap, please discharge it several times by grounding the anode of
CRT to earth many times to avoid electric shock.
b) Before moving the CRT, its anode must be thoroughly discharged. The CRT is a high vacuum
part. Once broken, its fragments will fly out violently. Therefore it must be very careful in
dismantling and loading it.
1.2.2 There are a lot of electronic and mechanical components in PCB that have safety related
Note: This service manual is only for professional service personnel’s reference. Before
servicing the unit, please read the following items carefully.

2
features. They are indicated with shadow in the circuit diagram. Please carefully read the detail
list before changing these components.
1.2.3 If the fuse is blown, please change it for the one designated in the list of components.
1.2.4 When changing resistors of 1w or bigger than 1w in PCB, make sure to separate them from the
PCB by10 mm.
1.2.5 Make sure that the wire stays far away from the high voltage or high temperature components.
1.2.6 Check for the AC leakage current of the metal components exposed out of the cover such as
antenna terminal, screw, metal surface and control axis. Make sure that the cabinet of TV set is
absolutely safe in operation, free from any risk in electric shock. Insert the power supply plug
directly into the 110V (or 220V) AC socket (No isolate transformer will be applied during the test).
Use an AC voltage meter with sensitivity of 5 kΩor higher per volt to measure the leakage
current according to the following steps:
First, connect in parallel a resistor of 1.5 kΩ,10 W and a 0.15 μF capacitor (AC type) between
the known good earthing connector (such as underground metal tube) and the exposed metal
parts out of the cabinet. Measure AC voltage across both terminals. Then exchange the two pins
of AC before re-measuring every exposed metal parts. The measured value of voltage should
not exceed 0.3V effective value, which corresponds to current.0.2mA. If the value exceeds this
specified value, aligning must be made at once.
Figure 1
1.2. 7 DC voltage breakdown test
The following touchable parts must be subject to 1s anti voltage test before packing. The
voltage is applied between the plug pin of the power supply and the exposed metal parts for the
test and the volt value should be AC 3000V.
Parts designation: Position:
Antenna terminal Back cover
External cover screw Back cover
AV interface Back cover
A
C Volt Meter
Good Earth Connect Point
(Such as underground metal etc)
This detector is placed
respectively at every
exposed metal parts.

3
1.3 Points of attention for product safety
There are many electric and mechanical parts in this PCB that are related to safety. However, they
are often neglected from visual look. For changing the high voltage and high power parts, very
often it’s impossible to provide them with effective “X-ray radiation” protection. All these exchange
parts with safety characteristic are designated in the detail list. All the electronic parts with such
characteristics are indicated with shadow in the circuit diagram.
When changing these parts, please carefully check the detail list.
2 Alignment items and procedure
The alignment flow chart (see below figure).
EEPROM copy
B+ check
Field breadth, center
and raster adjust
RF AGC adjust
Audio check
Focus adjust and aging
VG2adjust
White balance and sub-bright
Field breadth, center field and
raster adjust again
Ex-factory state setup
OSD center position
Focus fine adjust
Check
High-handed
Filament voltage
X-ray protect
Picture and audio
Sub-brightness
White balance
Color pure and focus
A
V
(S.DVD)
The button check
Remote control check
Assemble check
Safety check

4
3 Test equipment
3.1 Audio voltmeter
3.2 Oscillograph
3.3 High-voltmeter
3.4 Digital multimeter
3.5 AC attack pull test equipment
3.6 Sweep signal generator BT-3
4 Debugging instruction
4.1 Enter into the factory debugging menu
Press the following buttons to enter by using the remote control (RC-A23):
DISPLAY →MUTE →MUTE →MUTE →enter into the factory
Press “sleep” button for pages upward, press “ ” button for pages downward, press “CH+/-” to
select alignment items and “VOL+/-” to adjust volume, press “MENU” to exit.
4.2 B+ voltage adjustment
Adjust RP501 and check B+ voltage (negative pole of VD509) by using DC voltmeter DC 200V, the
value of B+ voltage should be 111.0V±0.5V.
4.3 AGC adjustment
4.3.1 Receive A7 signal and measure the AGC voltage (TP3) with digital DC voltmeter.
4.3.2 Antenna receive 40dBu signal and the static AGC voltage of TP1 should be V1=4V±0.2V. Receive
60dBu signal, adjust the value of P6 RF AGC and the voltage of TP1 AGC-take should be V2=3.5V±0.2.
If V2>3.5V, then the voltage is -1 or -2,if V2<3.5V, then the voltage is+1 or+2.
4.3.3 The antenna input 100dBu signal, the picture should not be appeared no-sync, distortion and moire;
input 35-40dBu weak signal, it should not be appeared colorless and no-sync and sound abnormity
electrophoresis of it.
4.4 Audio check
Receive signal tone signal, measure the audio out power with audio frequency meter and the maximum
undistorted power should larger than the maximum undistorted power of the product standard.
4.5 White balance and screen-grid voltage adjustment
4.5.1After enter P5 of factory menu, use remote sensor directly to adjust white balance by pressing the
following digital buttons:
“1”=R.BIAS(+) “2”=G.BIAS(+) “3 ”=B.BIAS(+)
“4”=R.BIAS(-) “5”=G.BIAS(-) “6”=B.BIAS(-)
press “P-P” button to select picture mode T1→T2→vivid→mild→nature→standard→custom
The T1 mode has the maximum value of brightness and contrast with all the other items minimum. Value
of all the analog items are minimum while in T2 mode.
Before adjustment you should set the following items: SUB-BRIGHT=50, R.B=100, G.B=100, B.B=100,
R.D=100, G.D=15, B.D=100, the items can be adjusted according the different CRT.
4.5.2 Press “P-P” button to select T2 picture mode, press CH+/- to select LINE, press VOL+ to let the
field scanning fail to oscillate, adjust the screen-grid potentiometer on FBT clockwise to let horizontal
bright line just appear on the screen; let the value of G.B unchanged, adjust R.B(+/-) and B.B(+/-)
(button1/4 and button3/6) 2-3 times to let the horizontal bright line appear white. If the green horizontal
line don’t appear firstly,fine-tunethe screen-grid voltage. After adjustment press VOL- to obtain normal

5
field scanning mode.
4.5.3 Receive signal (A7), enter P6 of factory menu, adjustment SUB-BRI to let picture on the screen
micro-bright at T2 picture mode.
4.5.4 receive white balance adjustment signal, enter P5 of factory menu and set the picture mode to
standard, let the value of G.D unchanged, adjust R.D(-/+) and B.D(-/+) to let the white part of the picture
appear “white”.
Use white balancer to rectify the white balance under following conditions
color temperature:1200K+8MPCD x =0.270± 0.008 Y=0.283±0.008;
dark space: 6-10nit, bright space: 60-100nit
Note:
1. If the dark balance appears changeable while the color changes from minimum to maximum, adjust
BY.TV/RY.TV of P12 to let it coincide with the white balance.
2. If the dark balance appears changeable while connected with DVD, adjust BY.YUV/RY.YUV of P12
and let it coincide with PAL white balance.
The above values can be preset according the product coincidence, so you may adjust a little.
4.6 Horizontal/vertical breadth, line, center adjustment and raster adjustment
4.6.1 Receive A28 five circles signal, press PP button to select picture mode of “standard”, adjust V.SIZE,
V.SHIFT, H.PHASE, V.LINE, VSC of P1 and the items of P2 to let the picture coincide with the demand.
4.6.2 Receive G43 five circles signal, press PP button to select picture mode of “standard”, adjust
V.SIZE, V.SHIFT, H.PHASE, V.LINE, VSC of P3 and the items of P4 to let the picture coincide with the
demand.
4.7 Check
4.7.1 High voltage and filament voltage check
Connect a high-voltage meter between anode cap of picture tube and the ground, measure the filament
voltage using rms voltmeter, receive A7 signal and set the picture mode to “standard”, the high-voltage:
25.5KV±1KV, filament voltage: 6.3±0.1Vrms. The high-voltage may differ on the CRT.
4.7.2 x-ray protection check
Receive A7 signal, set the picture mode to “standard”, shorten TP1-TP2 with 10KΩresistor, X-Ray
protection circuit should function, restart the TV 30 seconds after turn off the power source and it should
return to normal.
4.7.3 AV function check
According to the owner’s manual require, connect to the AV equipment and the AV interface:
VIDEO IN: 1 Vp-p 75OHM AUDIO IN: (-8±3)dBm>47 kOHM
S interface Y IN: 1 Vp-p 75OHM C IN: 0.3 Vp-p 75OHM
DVD Y IN: 1 Vp-p 75OHM Cr IN: 0.7 Vp-p 75OHM
Cb IN: 0.7 Vp-p 75OHM
4.7.4 AV parts check
receive standard TV signal:
a）AV and crossfire and allophone and shake ;
b）The user control function and picture mode
c）The remote control function check;
d）Color pure and converge check.
e）Sub-bright and white balance check

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4.8 ex-factory state setup
Picture mode(PP) STANDARD
Language All the country language
Color system AUTO
C.CAPTION C1
CCD ON MUTE OFF
RECEPTION AIR
AFT ON
MTS AUTO
PASSWORD CLEAR
Volume 30
Note:
1) Method to enter child lock: press “DISPLALY” till display lock sign on the screen.
Method to exit child lock: press “DISPLAY” till screen unlock, display the TV signal.
2) The password of rating control is 1980.
4.8 the factory menu adjustment model pre-set
Appendix 1: adjustment menu
OSD Item Preset Model
P1-60
V SIZE 60 HZ field amplitude 63 4.5.1
V SHIFT 60 HZ field center 1 4.5.1
H-PHASE 60 HZ horizontal
center
15 4.5.1
V LINE 60 HZ field line 15 4.5.1
V SC 60 HZ field S correct 23 4.5.1
V COMP Field amplitude
compensate
7 Fixed, minimize field amplitude when brightness
changes
L.BLK Left blanking 5 Fixed, adjust when white bar appears on left screen
R.BLK Right blanking 2 Fixed, adjust when white bar appears on left screen
P2-EW-60
COR.SW Corner revise 1 Fixed
H.SIZE.COMP High voltage
compensate 7 Fixed
TILT 60 HZ trapezia correct 31
DC 60 HZ H-breadth 21
AMP 60 HZ pincushion 9
COR.TOP 60 HZ top corner 2
COR.BOT 60 HZ bottom corner 4
Receive A12 signal, adjust to meet the demand of line,
distortion and over scanning
P3-50
V SIZE 50 HZ field breadth 113 4.5.2
V SHIFT 50 HZ field center 3 4.5.2
H-PHASE 50 HZ horizontal
center
5 4.5.2
V LINE 50 HZ field line 16 4.5.2

7
V SC 50 HZ field S correct 20 4.5.2
P4 EW-50
TITL 50 HZ trapezia correct 38
DC 50 HZ H-breadth 17
AMP 50 HZ pincushion 10
COR.TOP 50 HZ top corner 5
COR.BOT 50 HZ bottom corner 7
Receive G35 signal, adjust to meet the demand of line,
distortion and over scanning
P5
LINE Horizontal bright line 0 0=normal 1=line (service mode)
RB Red cut
100 4.4
GB Green cut
100 4.4
BB Blue cut
100 4.4
RD Red drive
100 4.4
GD Green drive
15 4.4
BD Blue drive
100 4.4
P6
RF AGC RF AGC 30 4.3
SUB-BRI Sub bright
65 4.4
SUB-CNT Sub contrast 31 Fixed
SUB-COL Sub color 1 Fixed
SUB-SHP Sub sharpness 12 Fixed
SUB-TINT Sub tint 25 Fixed (set picture to standard and adjust the value to
middle)
P7
VOL.FIL Volume control ADC
filter 0 Fixed
OSD.COT OSD contrast
5 Fixed
OSD.HPOS OSD center
25 Fixed
AFT H-AFC loop gain and
syn-door trigger 1 Fixed
VIF SW VIF3=45.75 MHZ 3 Fixed
VIDEO.LEVEL.OFFSET Video level 0 Fixed
SIF SW SIF0=4.5 MHZ 0 Fixed
VIDEO LEVEL Video level 2 Fixed (adjust to let video out to be 1VP-P)
P8
A2 .SW 0 Fixed
GY ANGLE G-Y demodulation
angle 0 Fixed
V.R TM Field scan starting
time 0 Fixed (adjust when frame shiver, abnormal line
interlace)
R/B ANG R-Y/B-Y demodulation
angle 8 Fixed
R/B BAL R-Y/B-Y demodulation 8 Fixed

8
ratio balance
C TRAP Color trap ware 6 Fixed
H FREQ H frequency 47 Fixed (no need for adjust after IC mask)
C.BPF TEST Color band-pass filter
center frequency 0 Fixed
P9
OVER.MOD.SW Over concoct 0 Fixed,0=no 1=have
OVER.MOD.LVL Over concoct point 0 Fixed
BLK.STR Black start level 2 Fixed,0=40IRE 2=60IRE 3-OFF
BLK.GAIN Black gain 2 Fixed,0=MIN 2=MAX
Y.APF Color trap 1 0=trap 1=straightaway (YcbCr&Y/C)
PRE.ADJ Preshoot
3 Fixed, adjust bar preshoot 0=narrow 3=wide
OVER ADJ After shoot 3 Fixed,adjust bar after shoot 0=narrow 3=wide
C.VCO.ADJ Color VCO frequency 4 Fixed,0-4-7=-120KHZ-0-90KHZ
P10
BRT.ABL.DEF Brightness ABL 0 Fixed,0=ABL ON 1=ABL OFF
MID.STP.DEF ABL take 1 Fixed
BRT.ABL.THR ABL treshold 7 Fixed
WPL.OPE White peak limit 2 Fixed
V BLK.SW Field blanking switch 0 Fixed,0=normal 1=wide
FBP BLK SW H blanking switch 1 Fixed,0=internal 1=FBP and logic “and”
DC REST DC reset rate 0 Fixed,0=100% 1=107%
CD.MODE Field frequency
division 0 Fixed,0=auto
P11
CORE GAIN Noise reduce gain 3 Fixed,0=OFF 1=MIN 3=MAX
ץ.GAMA GAMA corrct 0 Fixed,0=OFF
RGB TEMP.SW
Temperature
characteristic of RGB
DC output
1 Fixed,
A.MONI SW Output form pin5 1 Fixed,1=SAO (external audio input)
SVO OR FSC Output form pin52 0 Fixed,0=VIDEO 1=FSC (color subcarrier)
CROSS B/W Test signal 0 Fixed,0=TV
GRAY.MODE Test signal (white or
gray) 0 Fixed,0=white(75%) 1=gray(15%)
P12
BY TV Blue chromatism 8 4.4 dark white balance (TV/AV)
RY TV Red chromatism 8 4.4 dark white balance (TV/AV)
BY YUV DVD Blue chromatism 8 4.4 dark white balance (DVD)
RY YUV DVD Red chromatism 8 4.4 dark white balance(DVD)
S.TRAP.TEST Audio trap 6 Fixed
LOW.BRI Minimum bright
28 Fixed
LOW.CONT Minimum contrast
30 Fixed

9
P13
COL.KILL Color kill 7 Fixed,0=-30dB 3=-40dB
GY AMP GY gain 8 Fixed
VCO.FREQ VCO frequency 28 Fixed(no need for adjust after IC mask)
VM.GAIN VM gain 0 Fixed
VM.DELAY ADJ VM delay 0 Fixed
VCO TEST VCO adjust 0 Fixed
VPOS-50 50 HZ V-center
voltage 15 Fixed
VPOS-60 60 HZ V-center
voltage 15 Fixed
P14
Y GAIN 0 Fixed, 0=no blue extend function
Y TH 0 Fixed
B OFFSET 0 Fixed
B WIDTH 0 Fixed
C OFFSET 0 Fixed
C WIDTH 0 Fixed
CAN.V CHIP Canada V-CHIP
selection
Base on
demand 1=CAN.V-CHIP
OPTION1
AV AV select
3 AV input selection(3=AV1/AV2/S/DVD)
MTS Select MTS chip Base on
demand 0=no 1=72700 2=AN5832
V.OFF.MOTE Bright dot-killing mode 1 0=discharge 1=cut-off
PWR.MEM Turn on mode Base on
demand 0=stand by 1=auto 2=memory
1115 LV1115 selection 0 Fixed,0=no 1=have
BLCK GROND No signal background
selection 1 0=nothing 1/3=blue background 2=black background
N/PN North/south America
selection
Base on
demand 0=south America 1=north America
CH.OSD.BLACK OSD close when
switch channel 1 0=nothing 1=have
OPTION2
ENGLISH Base on
demand 0=nothing 1=have
SPANISH Base on
demand 0=nothing 1=have
FRENCH Base on
demand 0=nothing 1=have
PROTUGUESE Base on
demand 0=nothing 1=have

10
CATV HRC.IRC CATV HRC IRC
selection 0 0=nothing 1=have
INSIGNIA.LOGO LOGO is INSIGNIA 0 0=nothing 1=have
LOGO.TIME LOGO time 0 0=nothing 3=maximum
TV.ON.DELAY Turn on delay 0 0=no delay 3=maximum
1115
VOL.OFFSET 0
GAIN Adjust gain 3 Fixed
PWM LOGIC PWM logic 0 Fixed
AVL MODE AVL mode 2 Fixed 0:mute 1:auto 2:fixed
AVL DET LEVEL AVL starting 0 Fixed
AVL SLOPE AVL slope 0 Fixed
PWM SET
PWM.VOL PWM volume 1 Fixed
1-CHIP.VOL One track volume
control 127 Fixed
VOL 1 1% volume control 31 Fixed
VOL 25 25% volume control 82 Fixed
VOL 50 50% volume control 95 Fixed
VOL 75 75% volume control 108 Fixed
5832(available when MTS=2)
AGC 0 Fixed

11

12
MAIN IC
LA76932N BLOCK DIAGRAM

13
Function introduction to pin
pin function Reference
voltage
(V)
pin function Reference
voltage
(V)
1 SIF output 2.28 64 PIF input1 2.86
2 PIF AGC 2.61 63 PIF input 2 2.86
3 SIF input 3.11 62 IF GND 0
4 FM filter 2.64 61 RF AGC output 4.55
5 FM filter/sound output 2.25 60 Video output 2.30
6 Sound output 2.24 59 AFT filter 2.50
7 SIF APC filter 2.24 58 APC filter 2.60
8 IF VCC(5V) 4.92 57 Black level detection
filter
2.50
9 Expanded sound input 2.25 56 Internal video input and
S-C input
2.70
10 ABL 3.21 55 Video, colour and
deflexion power VCC
4.90
11 RGB VCC(8V/18Ma) 8.00 54 Expanded video input
and Y input
2.50
12 R ouput 2.65 53 Colour APC filter 3.40
13 G ouput 2.65 52 Selection video output
and FSC output
2.40
14 B ouput 2.67 51 Cr input 2.50
15 AKB (undo) 2.31 50 4.43 MHZ crystal 2.73
16 Field sawtooth filter to
capacitance
2.16 49 Cb input 2.50
17 Field output 2.34 48 Fast blank-out input 0
18 VCO Reference voltage 1.65 47 R input 1.89
19 H/BUS VCC(5V/27mA) 6.81 46 G input 1.90
20 H/APC filter 2.54 45 B input 1.90
21 H-output 0.28 44 Retrace impulse input 1.20
22 Video,colour and
deflexion ground
0 43 CCD VCC 4.50
23 x -ray protection, low
level availability
5.00 42 CPU GND 0
24 S input detection, high
Level availability
3.50 41 PLL 3.50
25 DVD detection, high
Level availability
6.50 40 reset 4.00
26 IR control input 4.90 39 Button input 0.32
27 AV1/AV2 H=AV1
L=AV2
0 38 TV/AV H=TV L=AV 0
28 POWER H=OFF 0 37 BL 5.00

14
pin function Reference
voltage
(V)
pin function Reference
voltage
(V)
L=ON
29 Turn voltage PWM
output
1.73 36 BH 5.00
30 Mute, high
Level availability
0 35 VDD 5.00
31 I2C DATA 5.00 34 x T2 4.50
32 I2C CLOCK 5.00 33 x T1 2.70
AN7522
Pins function
pin function pin function
1 power 7 GND input
2 CH1+ output 8 CH2 input
3 GND 9 volume
4 CH1- output 10 CH1+ output
5 Stand-by 11 GND (CH2 output)
6 CH1 input 12 CH1+ output
KA5Q0765
The Fairchild Power Switch(FPS) product family is specially designed for an off-line SMPS with minimal
external components. The Fairchild Power Switch(FPS) consist of high voltage power Sense FET and
current mode PWM controller IC.
PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking,
optimized gate turn-on/ turn-off driver, thermal shut down protection, over voltage protection,
temperature compensated precision current sources for loop compensation and fault protection circuit.
Compared to discrete MOSFET and controller or RCC switching converter solution, a Fairchild Power
Switch(FPS) can reduce total component count, design size, and weight and at the same time increase

15
& efficiency, productivity, and system reliability. It has a basic platform well suited for cost-effective
design in quasi resonant converter as C-TV power supply.
Internal block diagram

STV8172A
1 INVERTING INPUT 2.5
2 Vcc 26
3 PUMP UP OUT 1.5
4 GND 0
5 Ver.OUTPUT 13
6 OUTPUT STAGE Vcc 27
7 NON INV.INPUT 2.5
Pins function
pinfunction
voltage(V)
16

17
WIRING DIAGRAM
CRT PCB
XS401
XS402
A1
A2
S501
XS501
XS202
XS203
XS701
TUNER
XS601
XS602
XS301
XS604
XS201
XS302
N201
XS502
CRT
DEGASSINGP COIL
M108
FOCUS
SCREEN
MAIN
BOARDP667-TSC30-01
POWER SWITCH
KEY
BOARDP667-TS2130-05
XS901 XS902
+ -
+ -
SPE
A
KER
XS606
A
V BOARD
667-TS2130-29
220V/50HZ
AV PO RT
S PORT