Powerman Optima, Optima Plus ,
Back ProN
400/500/600/800
SERVICE MANUAL
1.TROUBLESHOOTING PROCEDURE :
Ⅰ
1.CAN'T START UPS.
2.CAN'T AUTO-RESTART ON AC MODE.
3.NO AVR FUNCTION.
4.NO OUTPUT POWER WHEN DC MODE.
5.CAN'T RECHARGE.
6.INVERTER OUTPUT WAVEFORM ABNORMAL.
7.FREQUENCY CAN'T BE SYNCHRONOUS.
8.NO ALARM ON INVERTER MODE.
9.ON DC MODE BATTERY VOLTAGE VALUE DETECTION ABNORMAL .
10.THE OUTPUT VOLTAGE IS TOO HIGH OR TOO LOW ON DC MODE.
2.
Ⅱ
CIRCUIT BLOCK DIAGRAMS
1. POWER CIRCUIT
2. BUZZER CONTROL CIRCUIT.
3.
RS-232 INTERFACE CIRCUIT.
4. FREQUENCY DETECTOR CIRCUIT.
5. AC INPUT DETECT CIRCUIT.
6. INVERTER CONTROL CIRCUIT.
7. OUTPUT DETECTOR CIRCUIT.
8. STS RELAY CIRCUIT.
9. AVR CIRCUIT.
10. LOAD DETECTOR CIRCUIT.
11. CHARGE CIRCUIT.
12. DC (battery) DETECT CIRCUIT.
13. TEMPERATURE DETECT CIRCUIT.
14.
OSC ＆ DISPLAY CIRCUIT.
15. RJ11/45 SURGE PROTECT CIRCUIT.
1
TROUBLE SHOOTING PROCEDURE:
1. CAN'T START UPS
2
TROUBLE SHOOTING PROCEDURE:
3
PRESS PSW
YES
DC FUSE F1
F2
5V 12V POWER
OK
PSW OK
Can't start on DC mode
MOSEFT
IN/output
Please follow turn
on UPS procedure
Check Circuit 6
Check power
Circuit & fuse
Power
circuit
& Fuse OK
Can't start on AC mode
Power circuit or
Transformer fault
YES
YES
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
Please change SW1
Check Power Circuit
Q10 U5 Q11
Check Circuit14
U7 & X1
Change DC FUSE
Cheek Bat.
Vol
t
.
Change Battery
2. CAN'T START ON AC MODE
TROUBLE SHOOTING PROCEDURE:
4
AC recover
FUSE OK
Change FUSE
Volt.of
Bat.OK
Change Battery or
charge Battery
AC OK
(Frequency)
Check Circuit4
AC OK
(Voltage)
Check Circuit 5
NO
YES
NO
YES
NO
YES
NO
YES
Power Circuit
OK
Check Circuit 1
NO
U7 (CPU) OK
Change U7
YES
NO
STS.RELAY
Circuit 8 fault
3. NO AVR FUNCTION
TROUBLE SHOOTING PROCEDURE:
5
AC mode
Check AC
range
Adjust AC range
Circuit 5
OK
Check circuit 5
NO
YES
U7 OK
Change U7
NO
YES
Q3.Q4.K2.K3.
R10.R11.R14 OK
Check circuit 9
Driver of Relay
NO
YES
Check Volt. of
transformer and
connector is OK
YES
NO
4. NO OUTPUT POWER WHEN DC MODE
TROUBLE SHOOTING PROCEDURE:
6
No output power
when AC fail
Bat. Volt. &
F1.F2 OK
Change Bat,or F1,F2
5V 12V OK
Check Circuit 1
NO
YES
MOSEFT
In/output
OK
Check Circuit 6
NO
YES
Bat.Volt.
Loading
Circuit 7 OK
Check Circuit
1,7,10
NO
YES
Please check it is over
load or output short
YES
NO
5. CAN'T RECHARGE
TROUBLE SHOOTING PROCEDURE:
7
AC OK
STS.RLY
Circuit 8
OK
Check Circuit 8
CN1
connecting
OK
Check CN1
NO
YES
Circuit 11
OK
Check Transformer
or Circuit 11
NO
YES
NO
YES
Circuit 11 be shutdown
Check ZD1, Q2
,U3,U7
NO
6. INVERTER OUTPUT WAVE WAVEFORM ABNORMAL
TROUBLE SHOOTING PROCEDURE:
8
INV output
Dummy load
Ok
Check Circuit 7.
MOSEFT
driving
signal OK
Check Circuit 6
NO
YES
Circuit 1
OK
Check Circuit 1
NO
YES
NO
YES
Loading out of spec.
Remove loading
7. FREQUANCY CAN'T BE SYNCHRONOUS(DC MODE CAN'T GO INTO AC
MODE)
TROUBLE SHOOTING PROCEDURE:
9
AC input OK
INV wave
form OK
Check Circuit 6
AC
frequency,
Circuit 4
Check Circuit 4
NO
YES
Circuit 5
OK
Check Circuit 5
NO
YES
U7 OK
Change U7
NO
YES
Check STS RELAY
Circuit 8
YES
NO
8. INV MODE NO ALARM
TROUBLE SHOOTING PROCEDURE:
10
DC MODE
Buzzer off
Press PSW 1 second.
U7 PIN17 is
LOW
Change U7
NO
YES
U7-17 signal
(2-
3KHZ)
Check Circuit 1
(PSW, D5)
NO
YES
NO
YES
Change BZ1
9. ON DC MODE BATTERY VOLTAGE VALUE DETECION ABNORMAL
TROUBLE SHOOTING PROCEDURE:
11
DC MODE
Circuit 1
OK
Check U5
NO
YES
R56.R65.R70
R73 OK
Check R56.R65
R70.R73
NO
YES
NO
YES
Check U7
+5V OK
Check Q11
10.THE OUT PUT VOLTAGE IS TOO HIGH OR TOO LOW ON DC MODE
CIRCUIT 1
12
DC mode
Circuit 1
OK
Check circuit 1
D3.D4.D14.D1
6
R28.R31.C11
OK
OK
Check circuit 7
NO
YES
NO
YES
Check U7 or Transformer
CIRCUIT 2: BUZZER CONTROL CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
TXD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
1
2
BZ1
BUZZER
R57
14
CIRCUIT 3
CIRCUIT 3: RS-232 INTERFACE CIRCUIT
1
2
4
3
U2
Q7
1
6
2
7
3
8
4
9
5
CONNECT OR DB9
1
2
4
3
U4
R29
D15
D12
D13
D17
D10
R2
R20
10K
R68
3K
C10
C9
5V
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
CIRCUIT 4
15
CIRCUIT 4: AUTO FREQUENCY DETECT CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
R60
Q5
R18
Ni
N input
CIRCUIT 5
16
CIRCUIT 5: AC INPUT DECTET CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
R59
C8
R60
R62
R61
D6
D9
R19
R21
R17
Li
Ni
R16
Q6-B
L input
N input
CIRCUIT 6
17
CIRCUIT 6: INVERTER CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
QM2
QM4
QM1
QM3
R44
R50
R43
R48
R46
R13
Q9
Q13
Q12
Q8
R24
R49
5V
R41
R39
12V
5V
TRANSFORMER
R6
C18
R5
R8
CH
R74
B+
CIRCUIT 7
18
CIRCUIT 7: OUTPUT DETECTOR CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
C11
K
A
D14
K
A
D3
K
A
D16
K
A
D4
R28
R31
TRANSFORMER
B+
CIRCUIT 8
19
CIRCUIT 8: STS RELAY CIRCUIT
5V
5V
5V
C19
Q14
L
i
3
4
5
1
2
K1
R55
R58
B
+
R75
C4
L input
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
TXD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
CIRCUIT 9
20
CIRCUIT 9: AVR ＆ OUTPUT CIRCUIT
3
4
5
1
2
K3
R11
Q4
3
4
5
1
2
K2
3
4
5
1
2
K4
K
A
D7
K
A
D27
R66
C20
R72
Q16
Q3
R10
N
o
Lo
Ni
AC/CT
TRANSFORMER
D6
B+
R14
N
o
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
B+
B+
ST S
L output
N output
CIRCUIT 10
21
CIRCUIT 10: LOAD DETECTOR CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
AC/CT
K
A
D20
K
A
D19
K
A
D21
R37
C13
R40
D22
D24
R38
CIRCUIT 11
22
CIRCUIT 11: CHARGER CIRCUIT
C1
ZD1
Vin
3
A
D
J
1
+Vout
2
U3
C12
K
A
D1
2
2
1
1
Battery
R1
Q2
R7
F2
R4
K
A
D14
K
A
D3
K
A
D16
K
A
D4
B
+
F1
BAT +
BAT -
5V
R9
K
A
D2
CH
TRANSFORMER
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
CIRCUIT 12
23
CIRCUIT 12: DC (battery) DETECT CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
R52
C16
R12
D11-A
(B+)
CIRCUIT 13
24
CIRCUIT 13: TEMPERATURE DETECTOR CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
5V
R3
C6
1
1
2
2
T H1
CIRCUIT 14
25
CIRCUIT 14: OSC ＆ DISPLAY CIRCUIT
5V
P1.4
1
RST
28
P1.3
2
RXD
27
VDD
3
test
26
P1.2
4
IN12
25
Lmos
5
VPP
24
Rmos
6
Xin
23
VSS
7
Xout
22
AN4
8
VSS
21
AN3
9
T XD
20
AN2
10
AVRh
19
AN1
11
CHG
18
AN0
12
T C1
17
REF
13
T C0
16
VDD
14
AVR
15
U7 CPU
5V
5V
C19
C15
C17
1
1
2
2
X1
LED1
GREEN
LED2
RED
R30
R32
CIRCUIT 15
26
CIRCUIT 15: RJ11/45 SURGE PROTECT CIRCUIT
1
2
3
4
8
7
6
5
9
10
11
12
16
15
14
13
NET 1
R77
R76
ZN2
27
