Sharp CX68KF5 Service Manual page 8

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SHIPPING SETTING AND CHECKING
(1) The following default data has been factory-set for the E
ITEMS
FACTORYSET 1
FACTORYSET 2
R/C
28(H)
S-SYSTEM
ALL CH D/K
LANGUAGE
CHINESE
SELECT
ITEMS
FACTORYSET 5
FACTORYSET 6
R/C
EA(H)
S-SYSTEM
ALL CH D/K
LANGUAGE
RUSSIAN
SELECT
#1 FACTORY-SET 8 OPERATE MCL2
#2 FACTORY-SET 8 only
ITEM
DATA SETTING
LAST POWER
ON
LAST TV/AV MODE
TV
LAST CH
CH1/CH2(#2)
FLASH BACK
CH1
FAVORITE CH1
CH10
FAVORITE CH2
CH20
FAVORITE CH3
CH30
FAVORITE CH4
CH40
1 DIGIT/2 DIGIT
2 DIGIT
VOLUME
0
H/P-VOLUME
0
ROTATION
0
SAVE
OFF
AV MODE
2
BALANCE
0
BLUE BACK
OFF
AUTO SELECT
ON
MODE
1
2
SOFT
STANDARD
CONTRAST
#
#
COLOR
#
#
BRIGHT
0
0
TINT
0
0
SHARPNESS
#
#
PICTURE NR
OFF
OFF
WHITE TEMP
0
0
SHAKIT
OFF
OFF
BASS +
#
#
SOR/SPA
OFF
OFF
LEVEL
0
0
BASS
#
0
TREBLE
#
0
# SERVICE MODE DATA
Model
Magnetic Field (V.H) nT
B
20,000
40,000
C (Singapore)
-10,000
40,000
F
-10,000
40,000
G
30,000
20,000
Australia
-50,000
20,000
2
PROM.
DATA SETTING
FACTORYSET 3
FACTORYSET 4
A8(H)
E8(H)
E9(H)
ALL CHI
ALL CH B/G
ALL CH B/G
CHINESE
ENGLISH
ARABIC
DATA SETTING
FACTORYSET 7
FACTORYSET 8
EB(H)
EC(H)
ED(H)
ALL CH B/G
ALL CH D/K
#1(MCL)
MALAY
FRENCH
ENGLISH
ITEM
DATA SETTING
VM
ON
TEXT
1
LNA
OFF
ON TIMER
IN ACTIVE
ON TIMER CH
IN ACTIVE
ON TIMER VOLUME
IN ACTIVE
REMINDER
IN ACTIVE
AFT
ALL CH ON
COLOUR SYSTEM
ALL CH AUTO
SKIP
ALL CH OFF
NICAM ON/OFF
ALL CH ON
SICAM STEREO MODE
ALL CH STEREO
NICAM BILINGUAL MODE
ALL CH M1
NICAM MONO MODE
ALL CH MONO
IGR ON/OFF
ALL CH ON
IGR STEREO MODE
ALL CH STEREO
IGR BILINGUAL MODE
ALL CH MAIN
3
DYNAMIC
#
#
0
0
#
OFF
0
OFF
#
OFF
0
#
#
Background
Lang.
17,000°K
CHINESE
17,000°K
ENGLISH
17,000°K
ENGLISH
18,000°K
ARABIC
17,000°K
ENGLISH
8-1
No. Adjustment point
1
Tuner IFT
1. Get the tuner ready to receive the CH. E-10
(PRESET)
TU200
2. Connect the sweep generator's output cable
3. Adjust the sweep generator's to 80dBµV.
4. Connect the response lead (use LOW
5. Set the RF AGC to 0 - 6 V with no saturation
6. Adjust the tuner IF coil to obtain the waveform
Note: Be sure to keep the tuner cover in position
2
RF-AGC
1. Receive the PAL Colour bar signal.
TAKE OVER
POINT
2. Connect the oscilloscope to TP201 (Tuner's
ADJUSTMENT
2
(I
C BUS
CONTROL)
3. Call "RF-AGC" mode in service mode. Adjust
4. Change the antenna input signal to 63 ~ 67
5. Turn up the input signal to 90 ~ 95dBµV to be
3
PIF VCO COIL
1. Do not receive any signal.
ADJUSTMENT
2. Connect the digital voltmeter to TP803 (pin (54)
3. Call the "PIF VCO" Mode at the service mode.
4. Verify that it is turned counterclockwise to 0V
S-SYS
I
B/G
B/G
B/G
B/G
SERVICE ADJUSTMENT
PIF ADJUSTMENT CHECKING
Adjustment Condition / Procedure
signal, but with no signal input.
Adjust the PLL data.
Oscilloscope
to the tuner antenna. (RF SWEEP)
IMPEDANCE probe with wave detector ; see
Fig.1) to the tuner's IF output terminal. (This
terminal must have the probe alone
connected).
with the waveform.
as shown in Fig. 2.
during this adjustment.
Note:
Signal Strength: 54 ± 1dBµV (75Ω open)
AGC Terminal) as shown in Fig. 3.
+
Oscilloscope
TP201
0.1~1.0V
precaution:
+
BIAS Box
TV SET
Bias Box : about 4.5V
Fig. 3
the "RF-AGC" bus data to obtain the Tuner
output pin drop 0.1 ~ 1.0V below maximum
voltage.
dBµV, and make sure there is no noise.
sure that there is no cross modulation beat.
DC voltage at TP803
5V
of IC800) in the main unit.
2.5V
and adjust T800 to make DC voltage of TP803
become 2.5 ± 0.1V in the range.
Down
Adjust T800 to B point, between B'
and B".
* Turn the coil counterclockwise for
8-2
Waveform or others
10k
1n60
1000p
IF OUT
100k
75ohm
Fig. 1
E-9 CH
P
C
-1.5+/-0.8dB
Fig. 2
For the 50Ω signal strength
gauge, when not using 50/75
impedance adapter, signal
strength is 52 ± 1dBµV (75Ω
open), instead of 54 ± 1dBµV
(75Ω open).
The loss of using impedance
adapter.
A
B'
B
B"
C
UP
the up direction and clockwise for
the down direction.

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