Xerox Telecopier 7033 Service Manual page 106

ADJ 4.7.4 Tag 4 Soft Switch Check
Method 2
1. Connect meter across telephone data cable.
a. Connect meter across L1 and L2 on the Coupler PWB.
b. Adjust meter to read volts AC Range.
2. Establish fax contact.
a. Press Poll/Man Rcv to set the machine into Manual Answer Mode.
b. Establish direct line fax contact by dialing the machine from a remote
telephone.
3. 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 2100Hz.
ADJ 4.7.5
4. Adjust the ATT1 switch on the Coupler PWB to obtain the correct Dbm and
Mv readings as indicated in Table 1.
NOTE: For location of ATT1 switch refer to Section 4 pag 6-2.
5. Press Stop to end the test.
6. Disconnect meter.
7. Replace handset on remote telephone.
Table 1. DBm to Mv Conversion
DBm Mv
0 775
1 690
2 615
3 548
4 489
5 436
6 388
6.5 367
7 346
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DBm Mv
8 308
9 275
10 245
11 218
12 195
13 173
14 155
15 138
Telecopier 7032 / 7033 Service Manual