File name AKAI_CT_2159.PDFm .AKAI
Rh
IERUICE lllAllUU1
..
Solid
State
21"
Colour
Television
Receiver
I
_*_ EARPHONE
u
iI
L-_______-.
AUTO
VOLTAGE
ALIGNMENT I.
A.
INSTRUCTION
and Maintenance
Before Adjustment
Don't short any two soldering points or connect any component while TV set is power on. B. Pull out power plug before maintenance. C. In order to ensure safety all components replaced should be identical with originals. (For further details, refer to the component name and component No. in PARTS LIST.) D. Must warm up for 30 minutes or more and degauss CRT thoroughly with demagnetiser before alignment.
II. a.
c.
Equipments
for Adjustment
b. Digital Voltmeter (Inner Resistance d. Demagnetiser f. Oscilloscope t 10MhZ )
e.
Pattern Generator (PHILIPS PM 5518) High Voltage Meter DC Regulated Power Supply
Ill.
ADJUSTMENT
LOCATION
_-_
(SECAM COLOUR DEMO ALIGN)
ClO6d TUNER
0.
JO04
piiEiGq
q
C604 BR901 s? CN902 lo POWER SWITCH 0
53 , vR401
o z
o\;1402
1
z it 1
0
04
0
CN901 I 0 AC INPUT
- 14 -
ALIGNMENT
IV.
A.
INSTRUCTION
(IC602)
CHANNEL) the option is absoletely the IC602 LIST code. necessary EEPROM of part to replace in the Main number. with the following PCB is replace item according for any reason. FOR AKAI l-CHIP MODEL
SETUP
OPTION In order The
EEPROM
(W/INITIATE to maintain EEPROM
IC602
to the destination, When placing which is required
when
an order tor EEPROM for ordering
be sure to list the option
code and Ref No. of EEPROM
instead
B.
Check
each
pairs
c403+ +B
of power
c405+
supply
and
if normal
c429+ +24V
then
go on to do following
C428+ +14v c435+ +9v ZD405+5\IM
alignment
C604+ +5v
Check Point Voltage Value
C108+ +31.7v
+16V(14") +18\/(20"/21")
C.
Press Colour
key "NORMAL" and Tint) value
on REMOTE at normal
HANDSET position.
to set each
analogue
(Brightness,
Contrast
- 15 -
ALIGNMENT
D DATA SETTING
INSTRUCTION
*
: There
setting the
are able to set by "normal" MODE" or "ADJUST
adjustment MENU".
(Colour,
Brightness
and Contrast)
Engaging To set the holding The the value
"TEST "+" the
CTV
to test MENU"
volume
mode (adjust menu), turn on the power and "-`I buttons on the front cabinet. is indicated MODE" set. key can select volume the corresponding "+" and "-" keys. hand with each parameter MENU), turn on the off the (ADJUST
switch screen. power
while
press
and
"ADJUST power can
To disengage Pressing
"TEST
switch The
or press parameter
key on the the above be changed
address
parameter.
by pressing
v.
A.
Method
Turn will B.
to enter
into
Power on the
ADJUST
Switch, screen. of keys
MENU
then keep down Volume Power Buttons Switch "UP" again and "DOWN" "ADJUST on MENU"
off the Main be displayed
the Marn PCB Simultaneously Corresponding Keys Functions Functions 1 AFT
and turn on the Main on REMOTE
HANDSET MUTE
234567890 RF VC0 C-R C-G C-B DR D-R S-B VAD
H-C
VI.
A.
Adjustment
Preparation 1. Set digital 2. Enter into
of AFC
Procedure voltmeter ADJUST at DC, |