Panasonic KV-S2045C Service Manual - Page 73

Error Code, Possible Cause, Check Point, Remarks, Classified Code, Key / Sensor

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KV-S2025C Series / KV-SU225C Series / KV-S2045C Series / KV-SU245C Series Error Code Possible Cause Check Point Classified Code ST1 ST2 ST3 ST4 U30 (Door open) 20 00 00 00 Front door remains open or is not Shut the door properly. closed properly. Door Switch does not work correctly. 1. Execute Key / Sensor on Sec. 9.3.6. to check the door switch (Door Sensor) ON / OFF condition. Remarks 2. Check the connection between the Door Switch and CN804 on POWER Board 3. Check the Door Switch mechanical condition. 4. Replace the faulty cable. Monitor circuit to check the door ON/OFF condition is broken. 5. Replace the Door Switch. 1. Execute Key / Sensor on Sec. 9.3.6. to check the door switch ON / OFF condition. 2. Check the connection between CN802 on POWER Board and CN1013 on CONTROL Board. 3. Check +24VS signal line (CN1013 - 3rd pin). 4. Check the CONTROL Board. Check point: Q1046 - C · +5V (when the door is open) · 0V (when the door is close) 5. Replace the faulty cable. 6. Replace the POWER Board. 7. Replace the CONTROL Board. F20 8A xx xx 00 SRAM error in G/A 1 occurs. (Memory error: SRAM error in G/A 1) 1. Check the soldering condition of the G/A 1 (IC1501) on CONTROL Board to repair it. 2. Replace the CONTROL Board. F21 (Memory error: Shading Memory 1 error for G/A 1) 8B xx xx 00 Shading memory1 error for G/A 1 1. Check the soldering condition of the occurs. Shading memory 1 (IC1505) on CONTROL Board to repair it. 2. Replace the CONTROL Board. F22 (Memory error: Shading Memory 2 error for G/A 1) 8C xx xx 00 Shading Memory2 error for G/A 1 1. Check the soldering condition of the occurs. Shading memory 2 (IC1506) on CONTROL Board to repair it. 2. Replace the CONTROL Board. F23 8D xx xx 00 Line Memory error for G/A 1 (Memory error: Line occurs. Memory error for G/A 1) 1. Check the soldering condition of the Line Only for KV- memory (IC1504) on CONTROL Board to S2045C/ repair it. SU245C 2. Replace the CONTROL Board. Series F24 8E xx xx 00 DRAM error for G/A 1 occurs. (Memory error: DRAM error for G/A 1) 1. Check the soldering condition of the DRAM (IC1510) on CONTROL Board to repair it. 2. Replace the CONTROL Board. F25 8F xx xx 00 SRAM error in G/A 2 occurs (Memory error: SRAM error in G/A 2) 1. Check the soldering condition of the G/A 2 Only for KV- (IC1502) on CONTROL Board to repair it. S2045C/ 2. Replace the CONTROL Board. SU245C Series F26 (Memory error: Shading Memory 1 error for G/A 2) 90 xx xx 00 Shading Memory1 error for G/A 2 1. Check the soldering condition of the occurs. Shading memory 1 (IC1508) on CONTROL Board to repair it. 2. Replace the CONTROL Board. Only for KVS2045C/ SU245C Series F27 (Memory error: Shading Memory 2 error for G/A 2) 91 xx xx 00 Shading Memory2 error for G/A 2 1. Check the soldering condition of the occurs. Shading memory 2 (IC1509) on CONTROL Board to repair it. 2. Replace the CONTROL Board. Only for KVS2045C/ SU245C Series F28 92 xx xx 00 Line Memory error for G/A 2 (Memory error: Line occurs. Memory error for G/A 2) 1. Check the soldering condition of the Line Only for KV- memory (IC1507) on CONTROL Board to S2045C/ repair it. SU245C 2. Replace the CONTROL Board. Series F29 93 xx xx 00 DRAM error for G/A 2 occurs. (Memory error: DRAM error for G/A 2) 1. Check the soldering condition of the DRAM (IC1511) on CONTROL Board to repair it. 2. Replace the CONTROL Board. Only for KVS2045C/ SU245C Series 73

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Error Code
Possible Cause
Check Point
Remarks
Classified Code
ST1
ST2
ST3
ST4
U30
(Door open)
20
00
00
00
Front door remains open or is not
closed properly.
Shut the door properly.
Door Switch does not work
correctly.
1. Execute
Key / Sensor
on Sec. 9.3.6. to
check the door switch (Door Sensor) ON /
OFF condition.
2. Check the connection between the Door
Switch and CN804 on POWER Board
3. Check the Door Switch mechanical
condition.
4. Replace the faulty cable.
5. Replace the Door Switch.
Monitor circuit to check the door
ON/OFF condition is broken.
1. Execute
Key / Sensor
on Sec. 9.3.6. to
check the door switch ON / OFF
condition.
2. Check the connection between CN802 on
POWER Board and CN1013 on
CONTROL Board.
3. Check +24VS signal line (CN1013 - 3
rd
pin).
4. Check the CONTROL Board.
Check point: Q1046 - C
·
+5V (when the door is open)
·
0V (when the door is close)
5. Replace the faulty cable.
6. Replace the POWER Board.
7. Replace the CONTROL Board.
F20
(Memory error: SRAM
error in G/A 1)
8A
xx
xx
00
SRAM error in G/A 1 occurs.
1. Check the soldering condition of the G/A 1
(IC1501) on CONTROL Board to repair it.
2. Replace the CONTROL Board.
F21
(Memory error:
Shading Memory 1
error for G/A 1)
8B
xx
xx
00
Shading memory1 error for G/A 1
occurs.
1. Check the soldering condition of the
Shading memory 1 (IC1505) on
CONTROL Board to repair it.
2. Replace the CONTROL Board.
F22
(Memory error:
Shading Memory 2
error for G/A 1)
8C
xx
xx
00
Shading Memory2 error for G/A 1
occurs.
1. Check the soldering condition of the
Shading memory 2 (IC1506) on
CONTROL Board to repair it.
2. Replace the CONTROL Board.
F23
(Memory error: Line
Memory error for G/A
1)
8D
xx
xx
00
Line Memory error for G/A 1
occurs.
1. Check the soldering condition of the Line
memory (IC1504) on CONTROL Board to
repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
F24
(Memory error: DRAM
error for G/A 1)
8E
xx
xx
00
DRAM error for G/A 1 occurs.
1. Check the soldering condition of the
DRAM (IC1510) on CONTROL Board to
repair it.
2. Replace the CONTROL Board.
F25
(Memory error: SRAM
error in G/A 2)
8F
xx
xx
00
SRAM error in G/A 2 occurs
1. Check the soldering condition of the G/A 2
(IC1502) on CONTROL Board to repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
F26
(Memory error:
Shading Memory 1
error for G/A 2)
90
xx
xx
00
Shading Memory1 error for G/A 2
occurs.
1. Check the soldering condition of the
Shading memory 1 (IC1508) on
CONTROL Board to repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
F27
(Memory error:
Shading Memory 2
error for G/A 2)
91
xx
xx
00
Shading Memory2 error for G/A 2
occurs.
1. Check the soldering condition of the
Shading memory 2 (IC1509) on
CONTROL Board to repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
F28
(Memory error: Line
Memory error for G/A
2)
92
xx
xx
00
Line Memory error for G/A 2
occurs.
1. Check the soldering condition of the Line
memory (IC1507) on CONTROL Board to
repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
F29
(Memory error: DRAM
error for G/A 2)
93
xx
xx
00
DRAM error for G/A 2 occurs.
1. Check the soldering condition of the
DRAM (IC1511) on CONTROL Board to
repair it.
2. Replace the CONTROL Board.
Only for KV-
S2045C/
SU245C
Series
73
KV-S2025C Series / KV-SU225C Series / KV-S2045C Series / KV-SU245C Series