Section 7
7-10
7.2.3.2. Servo Loop Power Supply PCB Test Procedure
1. Using a DMM, measure the DC voltages at the Servo Loop PCB test points.
The voltages should be as shown in Table 7-4.
2. Using an oscilloscope, measure the noise voltage levels at the Servo Loop
Power Supply PCB test points. The noise levels should be as listed in Table
7-4.
Test points on PCB Assy 19107
(near J100)
Voltage
(V ±5%)
Noise Limits
(mV p-p)
TP313 with respect to TP301 -40 <100
TP310 with respect to TP301 +40 <100
TP303 with respect to TP301 -15 <100
TP300 with respect to TP301 +15 <100
TP311 with respect to TP301 +12 <100
TP314 with respect to TP301 +5 <500
J101-1 with respect to J101-2 +30 ±15% <800
Table 7-4 : Test Point Voltages Assembly 19107
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