Panasonic RX-DS45 Service Manual page 32

RX-DS45
PREPARATION FOR SERVO GAIN ADJUSTER
Using the new version of the servo gain adjuster (SZZP1094C-1)
a
(For tracking gain, focus gain and tracking balance adjustments.)
Test connector
(SZZPIIO5C)
Adaptor B
(SZZPI104)
COP.C.B.
Yay (Rear Side)
fl
CP705
Servo gain Indicator
5 (V-REF)
eCONNECTING THE
OSCILLOSCOPE
(Mechanical adjustment and adjustment
of the best eye, focus offset, tracking
offset and tracking balance)
Oscilloscope
connection terminals
Oscillation level adjustmen
°6° Oscillation frequency adjustment
ee 750 Hz ;
—f/
CH2
1,000 Hz Osciliation
CHt 1,200 Hz frequency
1,500 Hz multiplier Power switch
a Tracking On/Off ( Normally use at On.)
XII Mode selector:
Not Connect 1. Tracking Servo Gain, Tracking Balance
2 Defeated
3. Focus Servo Gain
TP701] foyeee) ITP705| the CD P.C.B. Otherwise, the
Or OSITETOS V-REF and ground will be
(V-REF) (RF)
Do not connect to the ground on
short-circuited.
(TE/FE)
eUsing the former version of the servo gain adjuster (SZZP1017F)
(For tracking gain, focus gain and tracking balance adjustments.)
CONNECTING THE
Audio-frequency Oscillator OSCILLOSCOPE
(Mechanical adjustment and adjustment
®2 ee Q | of the best eye, focus offset, tracking
| | offset and tracking balance)
Servo Gain Adjuster - : : :
Oscillator Connection Conversion Oscilloscope
{(SZZP1017F) GNO OSC Terminals Connector
OQON/OFF SWITCH © (SZZP1032F)
sesh 0® «=
SELECTOR
osc®
= Never Connect
Oscilloscope Oscilloscope
Pa Connection
© Terminals
fe © ws TPS TPI TP7011TP703}TP705
2 (V-REF) (RF)
TP706|TP7011TP7038 5 CDP.C.B. EEE)
(GND) (V-REF) (+B) (Rear Side)
Oo not connect to the ground on the CD Do not connect to the ground on
see pone the V-REF and ground will ( the CD P.C.B. Otherwise, the
circuited.
V-REF and ground will be
CP 705 5 short-circuited.
Notes:
1. During adjustment, never connect CH-2 probe's GND to any place for it may short V-REF line.
(Connect CH-1 probe's GND to specified TP, described in each section.)
2. TP3 and GND terminal on the SZZP1017F and TP4, chassis of SZZP1017F are all same V-Ref potential.
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