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Power Supply CBA Top View
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F100) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
10-17 UPBPSPFSP004
Power Supply CBA Bottom View
Because a hot chassis ground is present in the power supply
circuit, an isolation transformer must be used when repairing.
Also, in order to have the ability to increase the input slowly,
when troubleshooting this type of power supply circuit,
a variable isolation transformer is required.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F100) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
10-18 UPBPSPFSP004
CAUTION ! CAUTION ! NOTE:
For continued protection against fire hazard, Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using
replace only with the same type fuse. If Main Fuse (F100) is blown , check to see that all components in the power supply hot GND as a common terminal.
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
HOT CIRCUIT. BE CAREFUL.
AC601 Q670
AC CORD T600
JACK CBA
1 6
7 CN3 CN2603
F100
SW601 T5AH 4 3,4 AMP+24V 3,4 AMP+24V
CN1 /250V LF100-LF102 BD100
P-ON+12V
L LINE BRIDGE
N FILTER RECTIFIER 5
8
IC120 9
CN2 CN2602 TO SYSTEM
(SWITCHING CONTROL) 3 10 PROTECT1 CONTROL
Q123 11-14 P-ON+12V 11-14 BLOCK
Q121
OUT1 7 6 AL+5.3V 6 DIAGRAM
FEED PC650
BACK (FEED BACK)
FB 3 AL+3.3V
4 1 F2603 IC2603
Q120 +6V REG.
OUT2 5 3 2
Q122 IC650
F2602 IC2602
SHUNT
Power Supply Block Diagram
REG. +3.3V REG.
VIN 2
Q180, Q181
Q600 (SWITCHING) SWITCHING PC280 IC2605
DRIVE 7 (ISOLATOR) +5V REG. P-ON+5V
DRIVE 8 4 1
FB 4 Q281
3 2 CN2105
20,21 P-ON+6V
9-5
VCC 5
26-29 P-ON+12V TO DIGITAL
HIGH-VOLTAGE T150B 15-17 P-ON+3.3V MAIN CBA
IC150 RESONANT CONTROL UNIT
Q150 9 9,10 AL+5.3V CN3701
VGH 16 SWITCHING 11 AL+3.3V
7
Q151 3
VGL 11 SWITCHING 11
12
5
Q152 8
VCC 2
10
VSEN 1 T150A
CN2
9 3 P-ON-H2 TO SYSTEM
RC 7 CONTROL
7 1 BACKLIGHT-SW BLOCK DIAGRAM
OC 6 3 5 BACKLIGHT-ADJ(PWM) CN2602
11
FB 3
12 CN4
5
8 14 BACKLIGHT-ADJ(PWM)
12 BACKLIGHT-SW
10 TO LCD MODULE
ASSEMBLY
PC150 CN4
(FEED BACK) 1-5 LED+24V
4 1
3 2
SHUNT IC200
PC281 REG.
(FEED BACK)
4 1
3 2
HOT Q280 COLD
POWER SUPPLY CBA UNIT
A13P0BLP
Power Supply Schematic Diagram
CAUTION ! NOTE: CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. The voltage for parts in hot circuit is measured using For continued protection against fire hazard,
If Main Fuse (F100) is blown , check to see that all components in the power supply hot GND as a common terminal. replace only with the same type fuse.
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
AC601
AC CORD
HOT CIRCUIT. BE CAREFUL. POWER SUPPLY CBA UNIT
CY106 TO JACK CBA
680P/250V CN3 CN2603
1 GND
VA101 VA102 CY107 OPEN
300V OPEN D250 2 GND
AC SB5100
INLET SW601 CN1 F100 LF100 TH101 LF101 LF102 3 AMP+24V
T5AH/250V OTC28A29 2R55A 8LE0045802GP 8LE0045802GP C250 R250
L T150B 470/35V 1K/2W 4 AMP+24V
R100A BD100 POWER TRANS D240
N
4
680K CX101 GBU406 MBR10100
VA100 CX100 R100B 3 9
0.22 680K 0.22
TVT14471 /275V /275V
R100C C122 ZD120 D230 C220 C221 C222 R221
680K TH100 0.68 R135 1ZB220-Y SBR20U40CT 470/35V 470/35V 470/35V L210 1K/2W
2R55A /450V 0.47/5W 7 R6*15
ZD121 Q150
VA104 VA103 1ZB220-Y 2SK4110
300V OPEN D C210 C211 C214
D151 (SWITCHING) 470/25V 470/25V 470/25V
1N4148 G 11
R152 S
R153 10 12
47 R151
IC150 10K
SSC9512 C150
CY101 CY100 CY102 CY103 HIGH-VOLTAGE 0.22
330P 330P 330P 330P RESONANT 8
/250V /250V /250V /250V CONTROL ZD150
OPEN Q151 C152
2SK4110 D 220P
1 VSEN NU 18 D152 (SWITCHING) /1KV 5 10
R162 1N4148 G
20K D260
2 VCC NU 17 R155 S SB5100
R161C R161B R161A C162 C155 51 T150A TO LCD MODULE
1M 1M 1M 0.1 10/50V 3 FB VGH 16 POWER TRANS D220 CN4 ASSEMBLY
R154 MBR10100 1 LED+24V
Q152 4 GND VS 15 R156 10K 3 9
AP01L60P 10 2 LED+24V
(SWITCHING) D 5 SS VB 14 D210
G SBR20U40CT 3 LED+24V
C158
1 6 OC NU 13 7 4 LED+24V
R163 S C156 R158 C151
100K 680P 470 7 RC NU 12 10P 5 LED+24V
/1KV 6 GND
C163 R164 8 REG VGL 11 11 7 GND
0.01 22K
9 RV COM 10 12 8 GND
3 C120A
68/450V
C120B
68/450V
C120C C121
68/450V OPEN
D150
1N4937
R150
10
8
JP213
OPEN
9
10
11
GND
GND
NU
C153 12 BACKLIGHT-SW
220P/1KV JP217
D122 5 10 R206 Q200 13 NU
OPEN OPEN OPEN R203 R204
C157 R157 C161 C154 3K 33.2K 14 BACKLIGHT-ADJ(PWM)
1000P 100 0.22 0.033
C124 /1KV PC150
100P/1KV PS256 C202
R160 (FEEDBACK) OPEN
L120 D120 560
8TI0072701GP RY2A 4 1
R159 C160 R202 C201 R205
10K 0.033 1K OPEN 7.87K
C125
100P/1KV C159 3 2
1 R200 C200 TO JACK CBA
1K 1 CN2 CN2602
L121 D121 14 P-ON+12V
8TI0072701GP RY2A
IC200 13 P-ON+12V
KIA431A R201
Q120 1.3K 12 P-ON+12V
2SK4111 SHUNT
D R671 ZD670 REG. 11 P-ON+12V
R121A R122A (SWITCHING) 10 NXP6V2B
1M 1M G 10 GND
D123 Q670 C670 R670 9 GND
R121B R122B S R123 R125 4148 BT169D 0.1 510
1M 1M 10K 20 R602A R602B R602C T600 8 GND
Q121 2.2M 2.2M 2.2M R608 POWER TRANS D660 L660 7 GND
R121C R122C D 2SK4111 1/2W SB240 8LR0062201GP
1M 1M (SWITCHING) 1 6 6 AL+5.3V
G R602D C600 ZD600 R600 C601 R660A C660 C661 C662 ZD660 C663 5 BACKLIGHT-ADJ(PWM)
R121D R122D 2.2M OPEN P6KE150A OPEN OPEN 20 470P 220/25V 220/10V OPEN 0.1
680K 680K S D124 Q600 7 4 GND
2
R124 R126 4148
10K 20 STR-A6069 D600 R660B 3 P-ON-H2
ZD601 (SWITCHING) UF1007 20
Q123 R601 1N4734A 2 NU
D AP01L60P 3/2W
(FEED BACK) R133 1 S/OCP D/ST 8 4 1 BACKLIGHT-SW
G 20K
2 BR D/ST 7 R605
S R134 R603 C603 10
Q122 100K 1M 0.22 3 GND NU 6 5
D AP01L60P R607 D601
(SWITCHING) R131 R604 100 1N4937 8
20K 4.7M 4 FB VCC 5
G R606
10 9
S R132 C602
100K 22
3 10
ZD603 C606 C605
IC120 1N4749A 22 0.1
SSC2101S PC650
SWITCHING PS256
CONTROL R127 (FEEDBACK) R654
100 100 R652
1 COMP IS 8 4 1 10K
R130 C130 ZD602 C604 R653 C651
36K 0.22 D127 OPEN 2200P 1K OPEN
2 VIN OUT1 7 4148 3 2
C131 C132 R120A C652 C650 R650
0.1 3 FB GND 6 680P 0.06/3W D126 2.2 0.22 27K
R128 C128 4148 PC281
33K 1000P 4 VCC OUT2 5 PS256
(FEEDBACK) R282 IC650
1K R651
D125 4 1 TL431 9.1K
4148 SHUNT
C129 R129 REG.
1000P 33K ZD281 ZD280