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- 2-5 -
■
PWM ALTERATION PART CHECK
P7905 9PIN 3.3V check
X601 12.288MHz operation
check
IC604 PS9829
86 PIN CLK input check
IC100 78KOKF2
21
➞
PWM_CLK
22
➞
PWM_DATA
23
➞
PWM_REST
output check
IC604 PS9829 DATA input
check
78 PIN
➞
DATA
79 PIN
➞
CLK
96 PIN
➞
REST
PWM MODULATOR output
check
FL:75(+)74(-)FR:71(+)70(-)
SW:68(+)67(-)
normal
IC604 PS9829 VDD PIN
Power check
(3.10.22.29.39.47.56.65.72.
87. 94)
Refer to SMPS
Troubleshooting
relevant parts check X604
12.288MHz
normal
R668(470
Ω
) output check
normal
LINE resistance check
DATA:R671 CLK:R670
RST:R665
normal
CD ASS`Y PS9829 communi-
cation status check(P7403)
IC604 PS9829 DATA input check
normal
IC604 PS9829 parts check
relevant parts
replacement
relevant parts
replacement
relevant parts
replacement
Refer to CD
Troubleshooting
Check each line
resistance check
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
Summary of Contents for LM-U360
Page 7: ... 1 6 ...
Page 20: ... 2 13 INTERNAL BLOCK DIAGRAM of ICs UTC MC4580 PIN CONFIGURATION TEST CIRCUIT ...
Page 21: ... 2 14 FAN8082D Internal Block Diagram ...
Page 22: ... 2 15 BU2090 Block diagram ...
Page 23: ... 2 16 BA3308 BA3308F BLOCK DIAGRAM BA3308 BA3308F ...
Page 24: ... 2 17 HT1200 4 SYSTEM BLOCK DIAGRAM ...
Page 25: ... 2 18 HT1200 4 FUNCTIONAL BLOCK DIAGRAM ...
Page 26: ... 2 19 CS5340 BLOCK DIAGRAM BU4052 BLOCK DIAGRAM ...
Page 27: ... 2 20 HA12237F BLOCK DIAGRAM ...
Page 28: ... 2 21 PT6324 BLOCK DIAGRAM ...
Page 43: ......
Page 53: ...2 54 2 55 PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD TOP VIEW ...
Page 54: ...2 56 2 57 MAIN P C BOARD BOTTOM VIEW ...
Page 55: ...2 58 2 59 FRONT P C BOARD ...
Page 56: ...2 60 2 61 SMPS P C BOARD DECK P C BOARD BOTTOM VIEW TOP VIEW ...
Page 57: ...2 62 2 63 CD P C BOARD TOP VIEW ...
Page 58: ...2 64 2 65 CD P C BOARD BOTTOM VIEW ...
Page 59: ......
Page 65: ... 3 10 ...