Service manual

XL-520W/CP-520

– 10 –

Figure 10-2

Figure 10-3

1. This CD unit need adjustment as follow.

CD SECTION

Figure 10-4

CD Test Mode

Adjustment Part

Value/Adjusting Method

Instrument Connection

Step 1 VR803 (Focus Offset) DC + 40 mV (FEI>VRO) FEI (R826) and VRO

(1-Pin of TP801)

Step 4 VR802 (Tracking Error Balance) *1 (See Fig. 9-2) TSO (3-Pin of TP801)

and VRO (1 Pin of TP801)

*1: Adjust to obtaiin vertically symmetrical waveform (Fig. 10-2) with respect toreference DC level. The reference level is VRO

(Approx DC 2.1V).

2. This CD unit have the following automatic adjustment function. Automatic adjustment item.

2-1: Focus Servo Gain (Fig. 10-3)

Focus Gain Adjustment is performed when disc is changed.

2-2: Tracking Servo Gain (Fig. 10-4)

Tracking Gain Adjustment is performed when disc is changed and disc is playbacked.

TSO

VRO

SYMMETRICAL

UP AND DOWN

FEI

FSO

TSO

TS2O

Figure 10-1 ADJUSTMENT POINTS

VR802 VR803

TP801

TRACKING

ERROR

BALANCE

FOCUS

OFFSET

CD SERVO PWB