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Icom BC-119N Service Manual
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Icom BC-119N Service Manual

Icom BC-119N Service Manual

Desktop charger, multi-charger
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DESKTOP CHARGER
bc-119n
MULTI-CHARGER
bc-121n

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Summary of Contents for Icom BC-119N

  • Page 1 DESKTOP CHARGER bc-119n MULTI-CHARGER bc-121n...
  • Page 2 This service manual describes the latest service information connect the charger to an AC adapter or a DC for the BC-119N DESKTOP CHARGER/BC-121N MULTI- power supply that uses more than 20 V (BC-121N: 16 V). CHARGER at the time of publication.
  • Page 3 CPU PORT ALLOCATIONS ....................2 - 2 SECTION 3 ADJUSTMENT PROCEDURES SECTION 4 PARTS LIST SECTION 5 MECHANICAL PARTS AND DISASSEMBLY BC-119N ...........................5 - 1 BC-121N ...........................5 - 2 SECTION 6 SEMI-CONDUCTOR INFORMATION TRANSISTORS ........................6 - 1 DIODES ..........................6 - 2 SECTION 7...
  • Page 4 SECTION 1 SPECIFICATIONS • BC-119N • Power supply requirement : 12 V to 20 V DC (negative ground) (W) × 2 (H) × 4 • Dimensions (projections not included) : 115(W)×60(H)×103(D) mm; 4 ⁄ ⁄ ⁄ (D) in. • Weight (adapters not included) : 200 g;...
  • Page 5 SECTION 2 CIRCUIT DESCRIPTION 2-1 DC-DC CONVERTOR CIRCUIT 2-2 CONSTANT-CURRENT CIRCUIT (STEP-UP/DOWN CONVERTOR) The constant-courrent circuit consists of DC-DC convertor circuit (Q5, D6, D7, L2), IC4, IC5, R24, R44, and R45. The DC-DC convertor circuit regulates the charging voltage from an AC adapter or a power supply to appropriate values The current detector circuit (R24) detects a charging current for various battery pack.
  • Page 6 2-4 CHARGING CURRENT AND VOLTAGE CHART IC2 pin number Rapid charging Low- Max. current battery voltage AD-101 BIT1 BIT2 BIT3 BIT4 BC-79 BC-119 (mA) High High High High High High High 11.5 High High High High High High High High High High High...
  • Page 7 [BC-121N ONLY]: Same adjustment as step 1 for MAIN-A–MAIN-F units. • MAIN UNIT TOP VIEW Reference voltage check point Power supply AC adapter 12 V 16 V/1 A [BC-121N] 12 V 20 V/1 A [BC-119N] Reference voltage adjustment 3 - 1...
  • Page 8 SECTION 4 PARTS LIST [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION 1110005350 S.IC NJM2870F05-TE1 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) 1140010280 S.IC µPD789112AMC-512-5A4 7030003690 S.RESISTOR ERJ3GEYJ 124 V (120 kΩ) 1110004700 S.IC S-80847ALNP-EEB-T2 7030005501 S.RESISTOR ERA3YKD 124V 1110005330 S.IC NJM12904V-TE1 7030005981 S.RESISTOR ERA3YED 333V...
  • Page 9 SECTION 5 MECHANICAL PARTS AND DISASSEMBLY 5-1 BC-119N MAIN UNIT EP1* *Plug types are depeded on versions. [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER QTY. QTY. DESCRIPTION DESCRIPTION 8010018700 2505 case Optional product Charger BC-145A [USA], [USA-1] 8110007620 2505 cover Charger BC-145E [EUR], [EUR-1] Screw PH B0 3 ×...
  • Page 10 5-2 BC-121N MAIN-C MAIN-B MAIN-F MAIN-A MAIN-E UNIT MAIN-D [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER QTY. QTY. DESCRIPTION DESCRIPTION 8510014530 1800 case (B) 8930041660 Stand leg cushion (B) 8110005890 1800 cover 8930057960 2571 plate Screw PH BT M3 × 8 NI-ZU 8810008660 Screw PH BT M3 ×...
  • Page 11 SECTION SECTION 6 PARTS LIST SEMI-CONDUCTOR INFORMATION 6-1 TRANSISTORS 6-2 DIODES NAME SYMBOL INSIDE VIEW NAME SYMBOL INSIDE VIEW 1SS355 2SA1576 R 2SB1132 R BARB DAN202K 2SC4081 R SB20-03P DTC144EU S2 S2 UPA1890 GR A1890 D1 S1 S1 XP6501 AB 6 - 1...
  • Page 12 SECTION 7 BOARD LAYOUTS MAIN UNIT (COMMON) to ADAPTOR • TOP VIEW In a BC-121N MAIN-B unit MAIN-C unit MAIN-D unit MAIN-E unit MAIN-F unit DC-IN In a BC-119N DC-IN 7 - 1...
  • Page 13 • BOTTOM VIEW 7 - 2...
  • Page 14 SECTION 8 BLOCK DIAGRAM 8-1 BC-119N to ADAPTOR MAIN UNIT UP/DOWN CHOPPER DC-IN REG. Q5: UPA1890 D6, D7: SB20-03P INPUT VOLTAGE BATT TEMP. DRIVER 1st REG. INPUT SEL. Q3: 2SC4081 Q1 : 2SB1132 Q4: 2SA1576 Q6, Q7: 2SA1576 Q12: XP6501...
  • Page 15 8-2 BC-121N to ADAPTOR MAIN-A UNIT UP/DOWN CHOPPER DC-IN REG. Q5: UPA1890 D6, D7: SB20-03P INPUT VOLTAGE BATT TEMP. DRIVER 1st REG. INPUT SEL. Q3: 2SC4081 Q1 : 2SB1132 Q4: 2SA1576 Q6, Q7: 2SA1576 Q12: XP6501 D4, D5: 1SS355 CURRENT DETECT SW REG.
  • Page 16 SECTION 9 VOLTAGE DIAGRAMS 9-1 BC-119N Q3 2SC4081 FGB 2A SB20-03P ADAPTOR S-N5051 S-N5051 HK-08S050-2010 AD-101 M1VO BC-119 46.4 µs 1SS355 CHARGE UPA1890 15.6V TEMP TEMP. DET. CURR 8.6V BIT1 1SS355 DTC144EU BIT2 0.01 0.001 0.01 BIT3 0.01 BIT4 SB20-03P BC-79 46.4 µs...
  • Page 17 9-2 BC-121N ADAPTOR Q3 2SC4081 FGB 2A SB20-03P S-N5051 S-N5051 HK-08S050-2010 AD-101 M1VO BC-119 CHARGE TEMP 1SS355 TEMP. 46.4 µs DET. CURR UPA1890 15.6V BIT1 BIT2 0.01 0.001 0.01 8.6V BIT3 BIT4 DTC144EU BC-79 0.01 46.4 µs 1SS355 SB20-03P 7.9V 0.01 0.01 0.01...
  • Page 19 Count on us! S-13810MZ-CD-1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan 2001 Icom Inc.

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Bc-121n