Basic Information - GE MAC 1200 Service Manual

Basic Information

Device cannot be switched on even though power plug is plugged in
Device cannot be switched on when running on battery power
Revision D
Troubleshooting: Basic Information
Repairs may only be conducted by approved service personnel.
For all the following points, see Chapter 4,
that need to be observed.
NOTE
The master password used to override all other passwords is SYSTEM.
 The green power lamp LED is off and device cannot be switched on.

Is the power cable defective or not plugged in correctly?

Are the primary fuses in the mains input module defective?

Is the connector from the mains input module to the mains switching power
supply plugged in correctly or cable defective?

Is the connector from the mains switching power supply to connector
POSUP/ on the PCB Control plugged in correctly or cable defective?
 Is the keypad via connector KEYB/ on PCB Control plugged in correctly?

It there a 26.5 V on the connector POSUP/?
If no: mains switching power supply defective.
If yes: PCB control defective or keypad defective.
 The green power lamp LED is on, but device still cannot be switched on.

Is the PCB control defective?

Is the keypad defective?

Is the battery depleted?
 Plug in power plug. The green power lamp LED should glow and the
device can be activated.
If not: refer to "Device cannot be switched on even though power plug is
plugged in" on page 5-3.

By connecting the power plug, rapid charging is activated (as indicated
with LED1 on the PCB battery charge).
If not: PCB battery charge is defective.

With power plug plugged in, let the unit charge for 10 minutes, then
disconnect power plug. Can the device be switched on and can a recording
be started?
If yes: Function OK. Continue loading with plugged mains plug.
If not: Is the battery disconnected or cable defective?
Is the battery defective (no capacity)?

Is the PCB battery charge defective?
MAC 1200 resting ECG analysis system
2012250-095
"Safety Instructions" section for items
5-3