Service manual

6. MAINTENANCE
Service Manual BSM-4100 6.3
The kit consists of the following.
• Extension boards: 11 pcs.
• Extension cables: 11 pcs.
• 80-pin connectors: 2 pcs.
Refer to Connection Diagram as shown below.
• Extension boards
DEBUG1: Connects the MAIN board and DPU board. The two 80-pin
connectors of this kit let you align the DPU board either vertical or
horizontal to the MAIN board. The desired connector (vertical or
horizontal) must be soldered on the DEBUG1 board. The connector
has a triangle mark which must be matched with pin 1A of CN102 on
the DEBUG1 board.
DEBUG2: Connects the MAIN board to the DEBUG3 board with the CNA2 and
CNA3 cables.
DEBUG3: Connects the Connection board to the DEBUG2 board with the
CNA2 and CNA3 cables.
EXT1: Connects the Operation, Power SW and alarm indicator boards to the
MAIN board with the CNA6 cable.
EXT2: Connects the recorder unit and speaker to the MAIN board with the
CNA7, CNA8 and CNA10 cables. The EXT2 board has +5 V DC
input and ground terminals and two resistors for the recorder unit
adjustment so that the output from the photo transistor of the
recorder unit can be adjusted with a digital voltmeter when the
recorder unit, EXT2 board and +5 V DC supply are connected. Refer
to Section 7 ADJUSTMENT. Set the jumper setting as follows:
Short circuit of pins 1 and 2: Enables to directly receive +5 V DC
from a DC power supply.
Short circuit of pins 3 and 4: Enables to receive +5 V DC from the
power supply unit when the MAIN
board is connected to the EXT2
board.
EXT3: Connects the motherboard to the EXT6 board with the CNA9 cable.
The EXT3 board has two connectors each for the motherboard and
cable.
EXT4: Connects the ECG RESP2 or ECG RESP3 board to the EXT5 board
with the CNA5 cable.
EXT5: Connects the ECG RESP1 or MP1 board to the EXT4 board with the
CNA5 cable.
EXT6: Connect the ECG RESP2 or ECG RESP3 board to the EXT3 with the
CNA9 cable. The EXT6 board has two connectors each for the analog
board and cable.
EXT7: Connects the SpO
2
, MP2 or MP3 board to the EXT8 board with the
YS-073P8 Board/Unit Maintenance Kit
Composition
Connection