Check Power - Panasonic KX-TG9581B Service Manual

KX-TG9581B/KX-TG9582B/KX-TGA950B
9.1.1.

Check Power

9.1.1.1. Base Unit
9.1.1.1.1. Adapter starting
Is the input voltage of Q903(2) about
5.5 V? (*1)
Is D1001 cathode voltage more than 2.6V?
Is the collector of Q606 about 1.8V?
Is the output voltage of IC905(3) about 3.4V?
Is the collector of Q607 about 3.0V?
Is the collector of Q701 about 1.8V?
Does BBIC(IC601:U11) oscillate at 10.368MHz?
is BBIC(IC601:B8) High?
Check Master_BBIC(IC601) and Flash_Memory
(IC603) and EEPROM(IC604)
Note:
(*1) Refer to Specifications (P.7) for part number and supply voltage of AC adaptor.
Cross Reference:
Power Supply Circuit (P.10)
YES
YES
YES
YES
YES
YES
YES
NO
Check F900, C902, D901, C916, C920, C921,
C912
Check AC Adaptor.
NO
Check Power Circuit.
NO
Check Q606, C612, R613, C613 and
Master_BBIC(IC601:M3)
NO
Check L902, IC905, R903, C914, R910, R917,
C918 and Master_BBIC(IC601:T2, U1, U2)
NO
Check C620, R612, Q607, R617, R618, C621 and
Master_BBIC(IC601:T10, V11)
NO
Check R702, Q701, C703, and Slave_BBIC
(IC701:24)
NO
Check Master_BBIC (IC601) and X601.
30
OK