ConMed 7550 - Page 48

B-4
Err Reason Probable Problems Suggested Solutions
304 Output Power Power Control Circuit Failed (A4). Recalibrate (See Power Calibration sec-
tion).
D/A Failed, P
CON (A5). PCON range 0-9V (A4, A5).
305 Activation Error Monitor Activation Request Error -
U32 (A5) failed.
Swap U16 & U33: A different error code
will occur if the problem is one of these
devices.
306 PW_MEA out of calibra-
tion
U7 on Power Control Failed. Recalibrate (See Power Calibration sec
-
tion).
Ramp transistors (Q1 or Q2) failed. Recalibrate EEPROM (See EEPROM
Calibration Section).
U14B (A4) Failed. Test if the error occurs for both Spray and
ABC.
U21 - Port A (ConD0..D7) on (A4 &
A5) wrong data.
ConD0..D7: Spray: 85h, ABC: C5h.
D/A Failed, P
CON (A5). PCON range 0-9V (A4, A5)
307 FB Amp Drive Error • U7 (A4) Failed
• U14A on (A4) Failed
• U21 - Port A (ConD0..D7) on (A4
& A5) wrong data.
• COND0..D7: CT-39H, Pinpoint-6Fh
• FBMON (A4): Ct: 2.85V, Pinpoint .35V
308 HVDC too high HV Control Loop failed (A1) Recalibrate (See HV & HVMON
Calibration section).
HV Monitor Failed (A1). • HVMON: Should be 1V when the
HVDC is 50V.
• HVDC should not exceed 200V
±3V in
Pinpoint or Spray at full power or ABC at
any power.
D/A Failed - V
CON (A5). VCON range 0V - 9V.
309 FBMON idle limit too
high
U14A (A4) failed. FBMON (idle) <155mV.
310 10V Ref Too high or low (A5). U6 Failed (A5).
311 15V Too high or low (A6). Q2 Failed (A6).
312 PW_MEA idle PW_MEA idle error (A4). U14B Failed (A4).
313 IMEA idle IMEA idle error too high. • U14D Failed (A4).
• U12 or U8 Failed (A5).
314 Stuck Activation Request U32 Failed (A5). Swap with U31 to verify.
315 Flow Idle Error • Flow Control Loop Failed (A1).
• Driver Q2 Failed (A1).
• U15B Failed (A1).
• Verify Q2 is off (A1).
• Disconnect J2 (A1).
• Verify FMON < 150mV (A1).
316 HV Idle Test • HVMON circuit failed (A1).
• 10V circuit on A7 Failed.
• J3 disconnected (A7).
• J1 disconnect (A1).
• HVMON idle = .2V.
• HVDC idle voltage = 10V
±2V.
318 Micro CRC Failed Microcontroller U22 (A5). Reset System - Note error code.
319 Micro RAM Internal RAM failed U22 (A5). Reset System - Note error code.
320 Micro Failed Failure within U22 (A5). Reset System - Note error code.
321 Test Switch Not in Run Mode (A5). See Maintenance (default setting).