Xerox Telecopier 7033, Service Manual

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ADJ 4.7.4 Tag 4 Soft Switch Check
1. When replacing RAM/ROM PWB, check to see if Tag 4 is installed in the
terminal. If it is, make sure that Soft Switch 051, Bit 0 is set to 1. If Tag 4 is
not installed, Soft Switch 051, Bit 0 must be set to 0.
ADJ 4.7.5 Transmit Level Adjustment (RX)
Adjustment
NOTE: Transmit level on the Coupler PWB is set by the factory to -10dbm. Refer
to Table 1 for the Operating level and adjust if necessary. There are two methods
that can be used for this adjustment.
Method 1
1. Connect meter across L1 and L2.
a. Remove telephone cable from L1 and L2.
b. Connect 600 ohm load resistor across L2 and L1 on the Coupler PWB
(Refer to Figure 1).
c. Connect meter across L2 and L1 on the Coupler PWB.
d. Adjust meter to read volts A.C. Range.
2. Select “Test 17 Freq Test”.
a. Enter Service Mode
b. Press 1 and 7 on the keypad.
c. Press Enter.
d. RX, except Germany: Press Select until display indicates 1650Hz.
e. RX, Germany: Press Select until display indicates 2100 Hz.
3. Adjust the ATT1 switch on the Coupler PWB to obtain the proper Operating
reading as indicated in Table 1.
NOTE: For location of ATT1 switch, refer to Section 4, page 6-2.
4. Press Stop to end the test.
5. Disconnect meter and remove 600 ohm load resistor.
6. Reconnect telephone to cable L1 and L2.
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Telecopier 7032 / 7033 Service Manual 4-47 ADJ 4.7.4,4.7.5
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