Rx Prompt Video Rf Agc Adjustment - Sony CCU-590 Maintenance Manual

4. Readjust the 1LV902 (PROMPT TUNE) on the TR-
133B board to make portion "A" of the video wave-
form flat.
(Note: If portion "A" does not become flat, proceed to

"4-7-4. RX PROMPT VIDEO RF AGC Adjustment",

and then perform readjustment in "4-7-3. RX
PROMPT VIDEO Demodulation Adjustment".)
A
Flat
B
A
1
TP701
TP901
E701
S1
TP1
LV1
2
E101
TP21
LV21
RV41
LV41
TP41
3
LV101
RV101
TP101
E102
4
4-34
C D
E801
RV901
LV901
TP801
LV902
RV902
RV701
TP201
LV201
LV601 LV602
LV402
LV401
LV301
LV302
TP301
TR-133B BOARD (SIDE A)
Note:
Perform the following after the adjustment is completed.
. Set S2 (TX ← REM → RX)/TR-133B board to "TX"
and then to REM.
. S1 (Cable Length)/DM-140 board → "F" (AUTO)
(unchanged)
. Re-set S301 on the DM-139B board of CA-590/590P to
"RX"
. Disconnect the BNC cable from the PROMPTER
terminal.
E F
RV801
RV201
TP202
RV601
RV401
TP402
TP401
RV301
E300
S363
TP302
G
E1
CN902
S2
CCU-590/P/V1(E)