S-Video Input 1 (Din 4 pin, Separate Y/C Signals Input)
p, impedance 75Ω)
Chassis Series: FB1-B
DVD Input: Component Video Jack-Y 1 (1.0Vp-p, impedance 75Ω)
Component Video Jack CB/CR 1 (0.7Vp-p, impedance 75Ω)
Audio inputs: Phono jack (R/L) 3 (436mVrms, impedance more than 40KΩ)
Video monitor output: Phono jack 1 (1.0Vp
-
p, 75Ω)
Audio monitor outputs: Phono jack(R/L) 1(436mVrms, Impedance less than
600Ω)
Give complete “SERVICE REF. NO.” for parts
order or servicing. It is shown on the rating plate
at the cabinet back of the unit.
This T.V. receiver will not work properly in
foreign countries where the television
transmission system and power source differ from the design specifications. Refer to
the specification table.
1: An isolation transformer should be connected in the
power line between the receiver and the AC line
when a service is performed on the primary of the
converter transformer of the set.
2: Comply with all caution and safety-related notes pro-
vided on the cabinet back, inside the cabinet, on the
chassis or the picture tube.
3: When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers
or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the
customer, the service technician must be sure that
it is completely safe to operate without danger of
electrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be
the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X
- RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this
service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits,
take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high
voltage check to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is particularly recommended that only parts designated on the parts list
in this manual be used for component replacement designated by mark . No deviations from resistance
wattage or voltage ratings may be made for replacement items designated by mark .
-2-
TUNER
VIDEO
L/R
INPUT-1INPUT-2
INPUT-3
MONITOR
OUT
Y-IN
Cb-IN
Cr-IN
L/R
VIDEO
VIDEO
L/R
L/R
Y/C
VIF/SIF
IC201
PROCESSOR
IC001
AUDIO AMP.
IC1401
WOOFER AMP.
KEY SW
RC
RECEIVER
LED
H-PHONE
SPEAKER
WOOFER
IC802
EEPROM
IC701
TRIPLE
VIDEO
OUTPUT
AMP
IC501
VERTICAL
T431
H-DRIVE
TRANS
Q431
H-DRIVE
Q901
CRT
T471
FBT
Q432
H-OUT
PCC
CIRCUIT
Chassis Block Diagrams
IC1401<Woofer Pre-Amp. IC> is not used
-3-
IC Block Diagrams
System Control
IC3701
AUDIO CONTROL/
KEY
SWITCH
SURROUND
14
13
A101
F/S TUNER
5
4
CIRCUIT
DEFLECTION
etc.
POWER CIRCUIT
PHOTO COUPLE
COLOUR SYSTEM OPTION INPUT
KEY SWITCH IN
11
12
IC201
QXXAVC534M
122
SOUND MUTE
10
RESET INPUT (RESET=LOW)
QXXAVC534C7JAS
13
VIDEO SELECTOR
(LOW=AV1, H=AV2)
26
2
SCL
2
POWER ON/OFF
SDA
1
9
16
(ON=HIGH, OFF=LOW)
106
33
RC SIGNAL IN
(ACTIVE=HIGH)
99
112
(ON TIMER ON=Low)
ON-TIMER LED OUT
HORIZ. SYNC IN (ACTIVE=LOW)
VERT. SYNC IN (ACTIVE=LOW)
18
17
127
SDA
9998
56
SCL
7
6
CPU OSC OUT
CPU OSC IN
OSC
X801
32.768KHz
(POWER ERROR=LOW)
POWER PROTECT IN
IC802
MEMORY
IC001
AUDIO AMP.
SECAM KILLER INPUT (HIGH=SECAM)
IC1201
VIDEO SELECTOR
BILINGUAL OUTPUT (LOW=S-1, HIGH=S-2)
VIF-M OUTPUT (HIGH=NTSC, LOW=OTHER)
RC PRE-AMP.
LED
-4-
IC Block Diagrams
IC201 < CPU/IF/Video/Chroma/Def.> QXXAVC534C7JAS
GO
85
GBCR
R
BL
RO
86
RGB CONTROL
OSD/TEXT INSERT
CON.
LR LR
LS-OUTHP-OUT
12S
63
6261
60
S
I/O
S
VOLUME
AUDIO CONTROL
DAC
FEATURES
TREBBLE/BASS
RDS
SCAVEM
ON TEXT
BCLIN
BLKIN
BO
84
83
87
65
CCC
WHITE-P.ADJ.
CONTR/BRIGHTN
BRI
SVM
RGB MATRIX
BLUE STRETCH
BLACK STRETCH
GAMMA CONTROL
SAT
SCART/CINCH IN/OUT
33
SSIF
REFO
39
ADC/DAC
AUDIO SELECT
AM
STEREO
ALL-STANDARD
A/D CONVERTER
SOUND PLL
DEEMPHASIS
DECODER
DIGITAL SIGNAL PROCESSING FEATURES
µ-PROCESSOR AND TELETEXT DECODER
DELAY LINE
BASE-BAND
DECODER
PAL/SECAM/NTSC
YUV IN/OUT
REF
DIGITAL
C
PEAKING
2H/4H
U/V DELAY
MODULATION
SCAN VELOCITY
Y DELAY ADJ.
COMB FILTER
Y
YUV
H/V
SKIN TONE
RGB/YPRPB INSERT
VERTICAL
U/V TINT
SATURATION
YUV INTERFACE
GEOMETRY
& EAST-WEST
R
R/P
X/YX)(CX)
B/PB
Yi
76
Vo UoUi ViYo
80
78 79
B
B/P
R
G/Y
G/Y
(CVBS
BL
SWO1
R/P
BL
32
EHTO
EWD
22 23
V-DRIVE
67
HOUT
QSSO/AMOUT
AGC
SWITCH
QSS MIXER
QSS SOUND IF
30
29
SIFIN/DVBIN
AM DEMODULATOR
43
DVBO/IFVO/
FMRO
PLL DEMOD.
VISION IF/AGC/AFC
44
31
24
AGCOUT
DVBO/FMRO
VIDEO AMP.
SOUND TRAP
GROUP DELAY
25
48
VIFIN
IFVO/SVO/
73
YSYNC
CVBSI
-5-
VIDEO IDENT.
VIDEO SWITCH
55
585951
C2/C3
CVBS2/Y2
CVBS3/Y3
CVBS4/Y4
VIDEO FILTERS
52
C4
64
CVBSO/PIP
2nd LOOP
H.OSC. + PLL
H/V SYNC SEP.
H-SHIFT
H.DRIVE
IC Block Diagrams
IC001 < Audio AMP.> TDA8947J/N3
VCC1VCC2
IN1+
IN2+
IN3+
IN4+
CIV
SVR
SGND
MODE1
MODE2
12
13
11
10
3
8
60 kΩ
6
60 kΩ
9
60 kΩ
60 kΩ
Vcc
0.5Vcc
7
5
++
+
+
+
Vref
STANDBY ALL
MUTE ALL
ON 1+2
MUTE 3+4
ON 3+4
16
-
-
+
SHORT CIRCUIT
AND
TEMPERATURE
PROTECTION
TDA8947J
215
14
17
1
OUT1+
4
OUT2-
OUT3-
OUT4+
GND1GND2
IC501 < Vertical Output > LA78041
Protection
-
AMP
+
Pump
Up
1
INVERTING
INPUT
2
Vcc
3
PUMP UP
OUT
4
GND
5
Ver. OUTPUT
Thermal
6
OUTPUT
7
NON INV.
INPUT
STAGE Vcc
-6-
CPU Port Functions
Pin No. Function Name Function
1VSSP2Ground
2VSSC4Ground
3VDDC4Digital supply to SDACs (1.8V)
4VDDA3(3.3V)Supply (3.3V)
5VREF_POS_LSLPositive reference voltage SDAC (3.3V)
6VREF_NEG_LSL+HPL Negative reference voltage SDAC (0 V)
7VREF_POS_LSR+HPR Positive reference voltage SDAC (3.3 V)
8VREF_NEG_HPL+HPR Negative reference voltage SDAC (0 V)
9VREF_POS_HPRPositive reference voltage SDAC (3.3V)
10XTALINCrystal oscillator input
11XTALOUTCrystal oscillator output
12VSSA1Ground
13VGUARD/SWIOV-guard input / I/O switch
14DECDIGDecoupling digital supply
15VP11st supply voltage TV-processor (+5 V)
16PH2LFPhase-2 filter
17PH1LFPhase-1 filter
18GND1Ground 1 for TV-processor
19SECPLLSECAM PLL decoupling
20DECBGBandgap decoupling
21EWD/AVL
22VDRBVert ical drive B output
23VDRAVertical drive A output
24VIFIN1IF Input 1
25VIFIN2IF Input 2
26VSCVertical sawtooth capacitor
27IREFReference current input
28GNDIFGround connection for IF amplifier
29SIFIN1/DVBIN1 (2) SIF input 1 / DVB input 1
30SIFIN2/DVBIN2 (2) SIF input 2 / DVB input 2
31AGCOUTTuner AGC output
32EHTOEHT/overvoltage protection input
33AVL/SWO/SSIF/Automatic Volume Levelling / swith
34AUDIOIN5LAudio-5 input (left signal)
35AUDIOIN5RAudio-5 input (right signal)
36AUDOUTSLAudio output for SCART/CINCH (left signal)
37AUDOUTSRAudio output for SCART/CINCH (right signal)
38DECSDEMDecoupling sound demodulator
39QSSO/AMOUTQSS intercarrier output / AM output
40GND2Ground 2 for TV processor
41PLLIFIF-PLL loop filter
42SIFAGC/DVBAGC
(1)
REFO/REFIN
/AUDEEM
(2)
East-West drive output or AVL capacitor
(2)(3)
output / sound IF input / subcarier
reference output / external reference
signal input for I signal mixer for
DVB operation
/ deemphasis (front-end audio out)
(2)
AGC sound IF / internal-external
AGC for DVB applications
Pin No. Function Name Function
43DVBO/IFVO/FMRO
44DVBO/FMRO
45VCC8V8 Volt supply for audio switches
46AGC2SIFAGC capacitor second sound IF
47VP22ndsupply voltage TV processor (+5 V)
48IFVO/SVO/CVBSI
49AUDIOIN4LAudio-4 input (left signal)
50AUDIOIN4RAudio-4 input (right signal)
51CVBS4/Y4CVBS2/Y4 input
52C4Chroma-4 input
53AUDIOIN2L/SSIF
54AUDIOIN2RAudio 2 input (right signal)
55CVBS2/Y2CVBS2/Y2 input
56AUDIOIN3LAudio 3 input (left signal)
57AUDIOIN3RAudio 3 input (right signal)
58CVBS3/Y3CVBS3/Y3 input
59C2/C3Chroma-2/3 input
60AUDOUTLSLAudio output for audio power ampli-
61AUDOUTLSRAudio output for audio power ampli-
62AUDOUTHPLAudio output for headphone channel
63AUDOUTHPRAudio output for headphone channel
64CVBSO/PIPCVBS / PIP output
65SVMScan velocity modulation output
66FBISO/CSYFlyback input/sandcastle output or
67HOUTHorizontal output
68VSScombGround connection for comb filter
69VDDcombSupply voltage for comb filter (5V)
70VIN (R/PRIN2/CX)V-input for YUV interface (2ndR
71UIN (B/PBIN2)U-input for YUV interface (2ndB
72YIN (G/YIN2/CVBS-Yx) Y-input for YUV interface (2
73YSYNCY-input for sync separator
74YOUTY-output (for YUV interface)
75UOUT (INSSW2)U-output for YUV interface (2
76VOUT (SW01)V-output for YUV interface (general
77INSSW33rdRGB / YPBPRinsertion input
78R/PRIN33rdR input / PRinput
(2)
Digital Video Broadcast output / IF
video output / FM radio output
(2)
Digital Video Broadcast output / FM
radio output
(2)
IF video output / selected CVBS
output / CVBS input
(3)
Audio 2 input (left signal) / sound IF
input
fier (left signal)
fier (left signal)
(left signal)
(Right signal)
composite H/V timing output
input / PR input or Cxinput)
input / PB input)
input / Y input or CVBS/Yx input)
RGB / YPBPRinsertation input)
purpose switch output)
nd
G
nd
-7-
CPU Port Functions
Pin No. Function Name Function
79G/YIN33rdG input / Y input
80B/PBIN33rdB input / PBinput
81GND3Ground 3 for TV-processor
82VP33rdsupply for TV processor (5V)
83BCLINBeam current limiter input
84BKLINBlack current input
85RORed output
86GOGreen output
87BOBlue output
88VDDA1Analog supply for TCG µ-Controller
and digital supply for TV-processor
(+3.3V)
89VREFAD_NEGNegative reference voltage (0 V)
90VREFAD_POSPositive reference voltage (3.3 V)
91VREFADReference voltage for audio ADCs
(3.3/2 V)
92GNDAGround
93VDDA(1.8V)Analogue supply for audio ADCs
(1.8V)
94VDDA2(3.3)Supply voltage SDAC (3.3 V)
95VSSadcGround for video ADC and PLL
96VDDadc(1.8)Supply voltage video ADC and PLL
97INT0/P0.5External interrupt 0 or port 0.5 (4 mA
current sinking capability for direct
drive of LEDs)
98P1.0/INT1Port 1.0 or external interupt 1
99P1.1/T0Port 1.1 or Counter/Timer 0 input
100VDDC2Digital supply to core (1.8 V)
101VSSC2Ground
102P0.4/I2SWSPort 0.4 or I2S word select
103P0.3/I2SCLKPort 0.3 or I2S clock
104P0.2/I2SDO2Port 0.2 or I2S digital output 2
105P0.1/I2SDo1Port 0.1 or I2S digital output 1
106P0.0/I2SDI1/OPort 0.0 or I2S digital input 1 or I2S
digital output
107P1.3/T1Port 1.3 or Counter/Timer 1 input
108P1.6/SCLPort 1.6 or I2C-bus clock line
109P1.7/SDAPort 1.7 or I2C-bus data line
110VDDP(3.3V)Supply to periphery and on-chip voltage
regulator (3.3V)
111P2.0/TPWMPort 2.0 or Tuning PWM output
112P2.1/PWM0Port 2.1 or PWM0 output
113P2.2/PWM1Port 2.2 or PWM1 output
114P2.3/PWM2Port 2.3 or PWM2 output
115P3.0/ADC0Port 3.0 or ADC0 input
116P3.1/ADC1Port 3.1 or ADC1 input
117VDDC1Digital supply to core (+1.8V)
118DECV1V8Decoupling 1.8V supply
119P3.2/ADC2Port 3.2 or ADC2 input
Pin No. Function Name Function
120P3.3/ADC3Port 3.3 or ADC3 input
121VSSC/PDigital ground for µ-Controller core
and periphery
122P2.4/PWM3Port 2.4 or PWM3 output
123P2.5/PWM4Port 2.5 or PWM4 output
124VDDC3Digital supply to core (1.8V)
125VSSC3Ground
126P1.2/INT2Port 1.2 or external interrupt 2
127P1.4/RXPort 1.4 or UART bus
128P1.5/TXPort 1.5 or UART bus
-8-
MENU
Option Setting
PLUG & PLAY
ON
After replacing the Memory IC (IC802)
The memory IC (IC802), stores the option data of TV set and service adjustments data for each circuit, therefore,
when the memory IC is replaced, it should be programmed to the following settings and “ SERVICE ADJUSTMENT”
on pages 15 to 16.
1) To enter to the Option Mode
Press and hold the MENU on the remote control and Programme down button (CH) on the front panel of
the TV. The option window will appear on the screen.
OPTION
TV/AV MENU - +CH
2) To set the Option Mode
Select the desired option item by pressing the Programme down or up button.
To switch the option mode, use the Level up or down button.
The data which is set in the option mode is stored into the memory IC automatically.
The following table shows the available option items and default setting mode.
WELCOME TEXT
AUTO VOLUME
TEXT NO SIGNAL
AFC
Option Mode
OFF
OFF
ON
ON
Option ModeModeDescription & Note
PLUG & PLAYON or OFFPlug & Play mode, default “ON”
WELCOME TEXTON or OFFDisplay message when first set up, default “OFF”
AUTO VOLUMEON or OFFAuto volume, default “OFF”
TEXT NO SIGNALON or OFFWhen no received signal, execution, default “ON”
AFCON or OFFAutomatic Frequency Control (AFC) available, default “ON”
3) Exit from the Service Mode
Press the Menu button or turn off the TV set by using the mains switch.
-9-
Service Adjustments with Replacing Memory IC(IC802)
Note: The CPU (IC201) and memory IC (IC802) store the service adjustments data and controls data for each
circuit.When the Memory IC(IC802) is replaced, some of the service adjustments should be readjusted to
obtain the best performance. The necessary service adjustments are carried out by using the RC handset.
Please set up the TV set with following steps [1] to [2].
[1] Initializing Procedure
1. Put a new memory IC.
2. Turn on the TV set.
3. Enter to the Service Mode as explanation on next page. Select “002 INIT TV 0” mode, then change to “1” by
pressing Volume + button on Remote Control.
4. When initialised the memory IC are completed, TV set will in stand by mode, all of the setting data (option data and
service adjustment data) stored in the IC are reset to the default value. It is necessary to set the option settings and
readjust the service adjustments (listed on page 11-13) and to re-tune all the channels.
This completes the initialization of memory IC.
Following shows the initialized contents of memory data by this procedure.