Sony RB1G Service Manual page 340

Troubleshooting
3-3-4. Main Board Power On Checking (for Main SP Lch & Rch)
No Checking Item
5 Check CL4605,
CL4606, CL4607
6 Check CL4601,
CL4602, CL4603,
CL4604
OK
Vdc = 3.3V ± 0.3V
CL4601 = 12.288MHz
CL4603 = 3.072MHz
CL4604 = 48KHz
CL4602 = moving CLK
All Vp-p ≈ 3.3V
If  NG
NG
Vdc < 0.8V CL4606 NG,
Check IC4601
If no frequency at CL4601, If sound source OK,
CL4603, CL4604, Ayu2 IC but CL4602 = NG,
(IC9000) NG. Ayu2 IC (IC9000) NG.
If no frequency at CL4602,
make sure sound source
OK.
Note:
(AYU2/Ayu2L) –
IC9000
(Brownie)- IC9001
RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
If  NG
CL4605,4607 NG,
Check IC9000
Size B* Board Type
(Segment: LW)
OTHERS EUROPE
24" BLX BLE
32" BKX/BLX BKE/BLE BKJ/BLJ
42" BKX/BLX BKE/BLE BKJ/BLJ
50" BLX BLE
JP
BLJ
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