Philips CDR880 - Service Test Program; Diagnostic Test Flowchart

17
IISCLK 1C7460-—1C7405 I°S-BUS clock
1IC7460—1C 7480
IC7460-s1C7465
IC7460—1IC7440
lISDIR I?S-BUS direction, high during playback
ISWS ?S-BUS word select
KILL CONN1430—>CONN1420 | Kill signal to mute analog output signal
CONN1430—D6400
LDCE P load input(from CDCEP
LDDE 1C71701C7210 P load output decoder
LDDS P load output DSICR
LDON
IC7130->CONN.1102
Laser
Diode
ON(on
read)
1C7105->CONN.1102
LEFTOUT C2497->CONN. 1400 Analog ‘eft output
C2497—CONN. 1420
C2497-—»C2300
LWRT
IC7245->CONN.1102
Laser
at
writing
power
MIRN Mirror normalized
MISO 1C7320<4R3168(IC7170) | Master in, Slave out: data from Basic Engine to USER.
IC7320~+CONN.1300
[MONON
=f
1C67170-31C7205
Monitoring
EFM
from
CDCEP
to
CD60
MOSI IC7320<+R3903(IC7170) | Master out, Slave in : data from USER to Basic Engine
IC7320<>CONN.1300
MOTO1
:
IC7170—31C7205
N4 IC7170-91C7205
NCLOSE IC7170-R3196
NIRQ
NMUTE
IC7320—1C7480
Mute
signal
(active
low)
1IC7320—>R3496,
3497
NOPEN 1IC7170-R3181 Tray open
NRSMP
IC7245—>CONN.1102
None
read
sample
OPTIN CONN.1400-1C7440 Optical input
CONN.1400->1C7465
Overload flag input
PLAY/REC IC7325-41C 7407 high during recording (digital out from DAIO), low during playback
digital out from CD60).
PP
CONN.1101->C2231
XB
or
PPN(read
or
write)
PWM Pulse width modulation
P read/write signal
Radial actuator positive connection
RAD- IC7105-CONN.1101 Radial actuator negative connection
|
RADINT
|1C7170-»R3111
Radial
actuator
integrator
voltage.
REN