~ SCRE~DRIVER
3.3 The a-Character Display
This section lists the messages which are placed in the 8-character display, they are classified by operating mode or circumstance. The special and scrolled messages associated with diagnostic mode are set out in Section 4.
Note: the display is illuminated
at
all times after power-on. If the £kharacter display is not illuminated, and none of the status indicators are illuminated, check that the front panel mains switch is set to I 1 I. If there are no displays with power on, this could indicatea
mains supply failure or
a
9914 V fauff.eM
1088 (Draft Issue H) Operation 3-33.3.1 Power-up Indications
When power is applied to the 9914V, a series of power-up tests are run by the internal diagnostics, with' TESTING' indicated. If a malfunction occurs, the display changes to one of the following indications.
After a successful completion of the power-on tests, the display momentarily indicates OK and then LOCATING; the operator may then mount a tape reel (as set out in Section 3.6) and initiate the threading sequence.
Most fault indications which are preceded by'
** '
require the attention of an engineer, and are therefore described in the 9914 V Servicing Manual.blank display Mains power is not available, or the +5 V supply is not present, or the Servo Control bus is faulty.
CON VAL X (X in the range 1 to 7), usually a missing or disconnected sub-assembly.
OK The power-up checks have been successfully completed.
POWER A fault has been found with the Power Supply board, while all the internal dc power supply lines were being checked.
TESTING The power-up checks are in progress.
3.3.2 Diagnostic Indications
This section lists diagnostic indications which occur during operator initiated diagnostics, online diagnostic messages are listed in Section 3.3.4.
DENS ERR Selected density is not available (programs 82 & 83).
HALT XX ' run/stop' was pressed while a program was still running.
NO KEY The called diagnostic program requires the service key code to be entered before it can run; this applies to programs where the internal configuration of the 9914V may be affected by running the program.
NO TEST A non-existent diagnostic program has been called, or the stack was empty when program 99 was called.
3-4
Offline The tape is tensioned and forward of BOT with the 9914V not in diagnostic mode, and not online.
9914V User I Diagnostic Manual CM 1088 (Draft Issue H)
Pass 05 A diagnostic program (in this case, program 05) has passed.
Run 51 A diagnostic program (in this case, program 51) is running.
STK FULL The diagnostic stack is fully loaded with 30 programs.
TEST 00 Diagnostic mode has just been entered.
3.3.3 General Indications
These indications c.ould occur during offline or online operation; messages which are unique to a particular mode (eg threading) are described in other sections.
EOT End-of-tape has been detected, the current working area is therefore at or beyond the EOT marker.
IN LIMIT The tension arm has reached the limit of its travel, tape tension has usually been lost.
LID OPEN Threading has been initiated, but the tape path cover thumb-screw fasteners are not secured.
Offline The tape is tensioned and forward of BOT with the 9914V not in diagnostic mode, and not online.
OK The 9914V does not have a fault condition.
ONLINE The 9914V is online to the host, and able to respond to host commands.
READY Tape has been threaded, and the 9914V is ready to accept host commands.
REWIND The tape is rewinding following either host or operator Rewind command, this operation completes at BOT. If RESET is pressed during rewinding, tape motion stops and the' REWIND' indication is replaced by' Offline '.
REW/UNLD An operator Rewind & Unload (ie Unthread) command has been given by holding RESET depressed while RWD/UNL is depressed.
UNLOAD An unload (ie unthreading) sequence is in progress following the pressing of the RWD/UNL button while BOT was indicated. As the unthreading sequence nears completion, the reel is unclamped and the display briefly indicates OK before indicating READY (which is the completion of unthreading).
>
Forward tape motion is in progress (usually displayed when a diagnosticprogram is running).
< Reverse tape motion is in progress (usually displayed when a diagnostic program is running).
eM 1088 (Draft Issue H) Operation 3-5
3.3.4 Online Indications
The following indications can occur when the 9914V is online but not running diagnostics.
Generally, the display remains until the next command is received.
Blank A forward Read or Space interface command has been terminated after 9 m (30 ft) of blank tape (ie no data activity found).
Deselect Unit online to interface, but not selected by host computer (ie de-selected), and not at BOT.
Diag Stk Diagnostic stack entry in progress.
Diag Oed Dedicated diagnostic stack running (program 01).
EOTLIM The tape has passed 3.6 metres (12 feet) beyond EDT and the 9914V has been commanded to move tape further forwards.
Erase FL An Erase Fixed Length command was accepted, at low speed.
Erase FL + An Erase Fixed Length command was accepted, at high speed.
Erase VL An Erase Variable Length command was accepted, at low speed.
Erase VL + An Erase Variable Length command was accepted, at high speed.
Ex Sense The extended (ie the full) status bytes were accessed.
**
IDENT No identifier (compatible with the selected density) found on leaving BOT.Ld Point The tape is at BOT, and the 9914V is online (note, BOT is indicated when offline in the same position).
Read A Read command was accepted, at low speed.
Read + A Read command was accepted, at high speed.
Read Only A a write command has been given to a file protected tape (ie WT EN is not illuminated). If writing is required, the operator must fit a Write Enable ring to the tape reel.
READY The 9914V is online to the interface but no commands have been received. (Display shows' Ld Point' when at the BOT marker).
Reject The last command received was rejected (for reasons other than file protect), the reason is flagged in status byte F9.
, Reject' usually remains displayed until an acceptable command is received; exceptionally (if BOT is found during a Reverse Read) BOT is displayed. Placing the 9914V offline removes' Reject' from the display.
Rev Read A Reverse Read command was accepted (with data transfer) at low speed.
3-6 9914V User I Diagnostic Manual eM 1088 (Draft Issue H)
Rev Read + A Reverse Read command was accepted (with data transfer) at high speed.
Rewind Tape is rewinding to BOT.
REWIUNLD A Rewind & Unload (ie Unthread) command has been given; the sequence rewinds tape to BOT and then continues until the tape is fully on the supply reel, and the reel unclamped. The ONLINE legend then extinguishes.
SecErase An Security Erase command was accepted.
Sense The condensed status bytes were accessed.
SpcFwd A Space Forward command was accepted, at low speed.
SpcFwd + A Space Forward command was accepted, at high speed.
SpcRev A Space Reverse command was accepted, at low speed.
SpcRev + A Space Reverse command was accepted, at high speed.
Srch Fig A file search forward (ignoring data) command was accepted, at low speed.
Srch Fig + A file search forward (ignoring data) command was accepted, at high speed.
Srch Fwd A File Search Forward command was accepted, at low speed.
Srch Fwd + A File Search Forward command was accepted, at high speed.
Srch Rev A File Search Reverse command was accepted, at low speed.
Srch Rev + A File Search Reverse command was accepted, at high speed.
Srch Rig A File Search Reverse (ignoring data) command was accepted, at low speed.
Srch Rig + A File Search Reverse· (ignoring data) command was accepted, at high speed.
STUCK!! The tape appears to be stuck at the heads. Check the cleanliness of the tape path. If clean, consider discarding that tape.
**
Write No write current was detected in the heads.Write A Write command was accepted, at low speed.
Write + A Write command was accepted, at high speed.
Write FM A Write File Mark command was accepted, at low speed.
Write FM + A Write File Mark command was accepted, at high speed.
CM 1088 (Draft Issue H) Operation 3-7
800 N RZ 800 bpi N RZ density.
1600 PE 1600 bpi PE density.
3200 OPE 3200 bpi (double PEl density.
6250 GCR 6250 bpi GCR density.