M7LXU
5. LOAD SHORT PROTECTION CIRCUIT OPERATION 2. LST-CH (LAST CHANNEL RECALL)
CHECK. Adjustment Procedure
Adjustment Procedure (1) Check that the set receiver alternates between the
(1) Receive circle pattern signal. channel which is being received and the channel
(2) Set ?Contrast? to maximum, ?Brightness? to center. which was previously received with each press of the
(3) After turning on the CTV set, confirm the DC voltage ?LST-CH? button of the Remo-con.
of D019, DOOF, D753 and D952, each cathode side.
These voltages should be 6V+l .OV. 3. MUTE
(4) Short-circuit both ends of R961 and check that the Adjustment Procedure
picture disappears within 2-3 sec. (1) Check that the sound alternates between mute and
(5) Disconnect short-circuit of R961 and the power cord.
mute free with each press of the ?Mute? button of the
(6) Discharge C905 as follows. Remo-con.
At this time, check that the indication color alternates
between yellow (letters : green) and magenta.
R906
4. RECALL
Adiustment Procedure
(1) Check that on-screen channel no. indication alter-
nates between On and Off with each press of the
?Recall? button of the Remo-con.
6. WEAK ELECTRIC FIELD CHECK
Adiustment Preparation 5. PIN P
(1) Connect one side of the 300 ohm feeder to Adiustment Preparation
75 ohm -300 ohm antenna adaptor. Connect the (1) Connect signal to ANT A and receive it.
antenna adaptor to the VHF antenna terminal board
(2) Connect signal to Video:1 Input.
as shown below.
(2) Turn to no signal condition. Adjustment Procedure
(1) Check that with each press of the ?PinP? button of
Adjustment Procedure Remo-con, sub-picture alternates between On and Off.
(1) Check that the phenomena such as oscillation and
When sub-picture is On, check that the channel num-
abnormal beat, etc. do not occur in all the channel. bers are displayed as below.
Antenna Terminal board
/
6. MOVE
Adjustment Preparation
VI. REMO-CON OPERATION CHECK
(1) Press ?PinP? button to set to PinP mode.
Adjustment Procedure
1. DIRECT CHANNEL SELECTION
(1) Check that with each press of the Move button of
Adiustment Procedure
Remo-con, sub-picture moves counterclockwise.
(1) Input 2 or 3 digits of channel number with the but- Note: When sub-picture is in the upper left of the
tons of the Remo-con ?0-9.? Check that the input
screen, the channel number of main picture
number and the on-screen display number are the comes to the lower right, as shown below.
same. (At IOOCH selection, press ?1? and after 2
seconds, press ?0? two times.
I-.---l---
After
2 seconds
24 |
ACEC
