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TROUBLE SHOOTING FLOW CHARTS (Cont.)
Is there
signal at speaker
terminal?
Yes
No
No
RF only
Check:
Speaker (SP901, SP902)
All Modes?
Is there
signal at IC001 10pin (L)
or 8pin (R)?
Yes
No
Is there
signal at IC3401 1pin (L)
or 30pin (R)?
Check:
Line: Front - Main (Mute)
IC001 1pin - IC801 (CPU) 2pin
Parts: IC001 (Audio AMP.), Q001
Yes
Check:
Line: Main (IIC Bus)
IC3401 13pin (SDA), 14pin (SCL)
Parts: IC3401 (Audio Control), Q3410(L), Q3420(R)
Yes
Check:
Line: AV - Main
IC1201 32pin - IC3401 30pin (R)
IC1201 33pin - IC3401 1pin (L)
IC1201 20pin (SDA), 19pin (SCL)
Parts: IC1201 (AV Selector)
Check:
Line: Main - AV - Main
A101 (TU-IF) 13pin - IC3601 11pin (MTS)
IC3601 2pin - IC1201 42pin (L)
IC3601 1pin - IC1201 40pin (R)
IC1201 20pin (SDA), 19pin (SCL)
Parts: A101, IC1201, IC3401(Audio Decoder)
Check:
Line: (AV) - Main (IC3401 - Monitor Out Terminal)
IC3401 9pin - Q1211 - IC1251 5pin (L:Variable)
IC3401 22pin - Q1201 - IC1251 2pin (R:Variable)
IC1201 33pin (AV) - Q3459 - IC1251 3pin (L:Fixed)
IC1201 32pin (AV) - Q3457 - IC1251 1pin (R:Fixed)
IC1251 4pin - Q1212 - Monitor Out Terminal (L)
IC1251 15pin - Q1252 - Monitor Out Terminal (R)
Parts: IC3401, IC1201, IC1251, Q1211, Q1201, Q3459, Q3457, Q1212, Q1252
Check:
Line: AV
AV1 Terminal - IC1201 2pin (L)
AV1 Terminal - IC1201 4pin (R)
AV2 Terminal - IC1201 8pin (L)
AV2 Terminal - IC1201 10pin (R)
AV3 Terminal - IC1201 14pin (L)
AV3 Terminal - IC1201 16pin (R)
Check:
Line: AV
DM (K5DMB 7pin) - IC1201 25pin (L)
DM (K5DMB 9pin) - IC1201 26pin (R)
Parts: DM
Digital Module Input only
AV1
or
AV2
or
AV3
No
Monitor
Out
NO SOUND