FujiFilm Fujica AX-1 Repair Manual And Part List page 105

REASSEMBLY. REPAIR AND ADJUSTMENT
FUJICA AX -1
GENERAL: Before proceeding to the following inspections, make sure that the loaded
battery is normal and that the GND and Vcc lines, SI - 2 switch and
ST printed circuit board are normal.
be sure to set the shutter dial and SI - 2 switch to "ON".
Section A
1. Check voltages on pins 33, 34, 35 and 36 of HA16517, and check the parts,
wiring and circuit related to these pins.
PIN NO.
33
Power switch
34
Power supply
circuit
35 Power supply
circuit
36 Power supply
When measured voltage is remarkably deviated from the above indicated voltage,
check the Trl, ST printed circuit board, S1 - 2 switch and battery, and recheck
the wirings related to these parts.
2. Check voltages and waveforms on pins 31 and 32 of the H16517, and check the
parts, wiring and circuit related to these pins.
PIN NO.
3 1 Oscillator circuit
32 Oscillator circuit
Relative parts
3. Check voltage on pin 18 of the H16517, and check the parts, wiring and circuit
related to this pin.
PIN NO.
18 LED brightness
adjusting circuit
Relative parts
FUNCTION
(S
1
S
1
S
1
(circuit power supply)
S
1
S
1
S
1
S
1
Vcc = Battery
FUNCTION
32.768KHz
32.768KHz
C13 (2200PE), R30 (6.8 ) and VR6 (4.7K )
FUNCTION
Approx. 2V o 1.5 [V]
R31 (9.1K )
- 1 0 2 -
When checking voltage or operation,
VOLTAGE AND OCCURRENCE
switch)
OFF ..Approx V c c - 1 [V],
ON Approx 0 [V]
OFF 0 [V],
ON Approx Vcc — 0.5 [V]
OFF Approx Vcc - 0.5 [V],
ON Approx Vcc —0.7 [V]
VOLTAGE AND OCCURRENCE
VOLTAGE AND OCCURRENCE
[VJ