Memory Initialize; Memory Initialize Operation Check; Operation Check; Afc Operation Check - Hitachi 36UX59B Service Manual

III. MEMORY INITIALIZE
1 .MEMORY INITIALIZE OPERATION CHECK
Adiustment Procedure
(1) Short Circuit 1001 Pin #33 to GND.
5V
1001
3
. .
+-ii&/
R054
, \
\ ,
,'
(2) Check that the receiving channel goes to CH03
and the setting should become to delivery setting
automatically.
(3) Delete short from 1001 pin #33.
IV. OPERATION CHECK
1. AFC OPERATION CHECK
Adiustment Preoaration
(1) Connect the circuit as shown below to the ANT
terminal.
Adiustment Procedure
(1) Receive a standard carrier (not offset) with the
channel up/down or direct selection buttons.
(2) Receive an offset signal of +1.5MHZ. Check that it
is pulled into the standard tuning point.
(3) Receive an offset signal of -1.5MHZ. Check that it
is pulled into the standard tuning point. (Perform
the channel selection operation again.)
Note: Modulation signal should be used at the
circle pattern and the color bar signal.
Checking circuit
(All channel converter can be used)
_____-_______________
--
; RF
I CONVERTER
-I---------
1 MSLXU
2. CHANNEL SELECTION CIRCUIT OPERATION
CHECK
2-1 Channel Up/Down Selection
Adiustment Preparation
(1) Set the TV set so that VHF (11, 13CH), UHF (14,
46, 63CH) and CATV (A, E, P, WCH) can be
received.
(2) Set Signal Source mode to Antenna on the set up
menu. (Press the Menu key, and select Setup,
then select Signal Source mode, See next page.)
Adjustment Procedure
(1) Check that VHF are received correctly by pressing
CH Up (A) or Down (7) button.
Adiustment Preparation
(3) Set Signal Source mode to CATV 1.
Adiustment Procedure
(2) Perform the same operation as in Item (l), and
check that VHF and CATV are received correctly.
Adiustment Preparation
(4) Set Signal Source mode to CATV 2.
Adjustment Procedure
(3) Perform the same operation as in Item (l), and
check that VHF and CATV are received correctly.
Note: This check should be done to both ANT A and B.
(36/32UX59B and 36/32FX49B models)
I
RF
+
TO ANT
31