Sony CDP-X55ES - Page 7

1. Keep the set horizontal.
If the set is not horizontal, this adjustment cannot be
Cis due to the gravity against the 2-axis device.
Put the set into test mode.
. Set disc (YEDS-18) and turn POWER switch on.
. Connect oscilloscope to main amp board TP (FEO).
. Adjust RV201 so that the waveform is as shwon in the figure
below.
ma & wn
(focus gain adjustment)
VOLT/DIV : 100mV
TIME /DIV : 2mS
100mV
ov
e Incorrent Examples (DC level changes more than on adjust-
ed waveform)
low focus gain
VOLT/DIV: 100mV
TIME /DIV : 2mS
250mV
VOLT/DIV: 100mV
TIME /DIV : 2mS
100mV
75mvV
OV
Adjustment Location : MAIN BOARD —Component side —
RF LEVEL CHECK FOCUS GAIN ADJUSTMENT
TP(RFG) TP(RF) FEO, RV201
EF TP (TEQ)
BALANCE | TP (TES)
CHECK ‘TP(ADJ)
TP(PLCK)
RF PLL LOCK
FREQUENCY CHECK
TP(TEO), RV202
nd
TRACKING ADJUSTMENT
ey Gor
6. Connect oscilloscope to main board TP (TEO).
7, Adjust RV202 so that the waveform is as shown in the figure
below. (tracking gain adjustment)
8. Turn POWER switch off.
VOLT/DIV: 1V
TIME /DIV : 2mS
———— OV
@ Incorrect Examples (fundamental wave appears)
low tracking gain
VOLT/DIV: IV
TIME /DIV : 2mS
——— OV
high tracking gain
higher fundamental wave than for low gain)
VOLT/DIV: IV
TIME /DIV ; 2mS
——— OV