Service manual

17
20U-FS1
CU20FS1
17-1
17-2
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
ADJUST R737 SO THAT THE +B VOLTAGE IN VOLTMETER READING IS
AS BELOW.
+B ADJUSTMENT
– STEP RANGE –
–
AFTER ALL ADJUSTMENT FINISHED.
US 4 CH LION HEAD (MONOSCOPE PATTERN)
AC 120V, RF INPUT
ADJUSTMENT
ITEM
ADJUSTMENT
POSITION
CONTROL PRE-ADJUST
REQUIREMENT
CONTENT
INPUT
CONDITION
OUTPUT
ADJUSTMENT
PROCEDURE
H-POSITION
V07 STEP RANGE 0-31
I
2
C BUS CONTROL
OPTION SET UP, BUS SET UP, CRT-PURITY
US 4 CH LION HEAD (MONOSCOPE)
AC 120V, US MAGNETIC FIELD
CONFIRMATION BY CRT SCREEN
CONNECT THE DIGITAL VOLTMETER AND MEASURE
+B LINE
[VOLTAGE COMFIRMATION]
130 ± 0.5VDC (CHECKING SPEC : 130V ± 0.8 VDC)
1. ADJUST THE V07 BUS DATA TO HAVE A BALANCE POSITION TO SPEC
OF A=B.
2. IF CANNOT MAKE IT TO A=B, ADJ FROM THE BEST POINT SO THAT
B SLIDELY SMALLER THAN A
[CHECKING SPEC]
LEFT AND RIGHT SYMMETRICAL
AB