Pioneer PDR-04 - Manual (Page 46)

PDR-04
6. ADJUSTMENT
6.1 ADJUSTMENT METHODS
If a compact disc recorder is adjusted incorrectly or inadequately, it may malfunction or not work at all even though there
is nothing at all wrong with the pickup or the circuitry. Adjust correctly following the adjustment procedure.
# Measuring instruments and Tools
(1 ) Dual trace oscilloscope ( 1 0 : 1 probe) (6) Resistor (1 OOkQ)
(2) Low-frequency oscillator (7) Hexagonal screwdriver (1.27mm diagonal)
(3) Test disc (STD-903), (STD-R03) (8) Standard tools
(4) Low-pass filter (15kQ + 0.001 jxF), (39kQ + 0.001 pF) (9) Small screwdriver
(5) Hi-pass filter (3.9kD + 180pF) (10) Multimeter (Voltage accuracy : Below 1 mV)
# Adjustment Kerns / Verification items and Order
Adjustment 1
Step Item Test Point Adjustment Location
1 Playback Power Adjustment CN104 (TP1), Pin 7 (PWAJT) VR103 (PB. PW)
2 Coarse Focus Offset Adjustment CN204 (TP201), Pin 1 (RF) VR105 (FE. OFS)
3 Coarse Skew Adjustment CN204 (TP201), Pin 1 (RF)
Radial tilt adjustment screw and
Tangential tilt adjustment screw
4 Coarse Grating Adjustment CN104(TP1), Pin3(TE) Grating adjustment slit
5 DPP (Tracking Offset) Adjustment CN104 (TP1), Pin 3 (TE) VR112 (TE. OFS)
6 Fine Focus Offset Adjustment CN204 (TP201), Pin 1 (RF) VR105 (FE. OFS)
7 Fine Skew Adjustment CN204 (TP201), Pin 1 (RF)
Radial tilt adjustment screw and
Tangential tilt adjustment screw
8
Grating Re-adjustment CN104 (TP1), Pin 3 (TE) Grating adjustment slit
Adjustment 2
Step Item Test Point Adjustment Location
1 CD-R VCO Control Voltage Adjustment CN331 (TP30), Pin 1 (VCOIN) VR301 (VCO CON)
2 Multi Pulse Time Adjustment CN3506, Pin 6 (MPLS) VR3501 (MPLS DLY)
3 EFM Rising Edge Time Adjustment
CN3506, Pin 5 (EFM IN)
CN3506, Pin 4 (SEFM)
VR3502 (EFM DLY)
4 3T Falling Edge Time Adjustment
CN3506, Pin 3 (3T IN)
CN3506, Pin 2 (3T OUT)
VR3503 (3T DLY)
5 WBL+ Offset Adjustment CN104(TP1), Pin6(RWBL) VR107 (WBL+. OFS)
6 Coarse WBL Offset Adjustment CN104 (TP1), Pin 5 (WBL) VR108 (WBL. OFS)
7 Playback Power Re-adjustment CN104 (TP1), Pin 7 (PWAJT) VR103 (PB. PW)
8
Coarse Focus Offset Adjustment CN204 (TP201), Pin 1 (RF) VR105 (FE. OFS)
9 Main and Sub Mix Ratio Adjustment
CN104 (TP1), Pin 1 (STE)
CN104 (TP1), Pin 2 (MSTE)
VR110(MS. MIX)
10 Tracking Amp. Gain Adjustment CN104 (TP1), Pin 3 (TE) VR111 (TE. GAIN)
11 Tracking Offset Adjustment CN104 (TP1), Pin 3 (TE) VR112(TE. OFS)
12 ACT Offset Adjustment CN5021 (TPOO), Pin 1 (ACT ERR) VR1 (ACT. OFS)
13 ACT GAIN Adjustment CN5021 (TPOO), Pin 1 (ACT ERR) VR10 (ACT. GAIN)
14 Fine Focus Offset Adjustment CN204 (TP201), Pin 1 (RF) VR105 (FE. OFS)
15 WBL BALANCE Adjustment CN104 (TP1), Pin 5 (WBL) VR106 (WBL. BALANCE)
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