PG-1210 Service Manual
STEP 3-2
Fig.6-6. U505 PAM TXEN and DCSSEL Test Point on the PCB Layout
6.5.4 VC-TCXO
Step
Test
point
Typical Value
Condition
Reaction to Abnormality
4-1
U503
Pin#1
0.5V ~ 2.5V
1,2,3,4,5,6,7
Check route connection : AFC
4-2
U503
Pin#4
2.8V
1,2,3,4,5,6,7
Check route connection : VTCXO
STEP 3-1
STEP 4-2
STEP 4-1
Fig.6-7. U503 VCTCXO Check Point Circuit
42
PANTECH
4
